HashSet(T) Class

Represents a set of values.

To browse the .NET Framework source code for this type, see the Reference Source.

System.Object
  System.Collections.Generic.HashSet(T)

Namespace:  System.Collections.Generic
Assemblies:   System.Collections (in System.Collections.dll)
  System.Core (in System.Core.dll)

type HashSet<'T> =  
    class 
        interface IReadOnlyCollection<'T>
        interface ISet<'T>
        interface ICollection<'T>
        interface IEnumerable<'T>
        interface IEnumerable 
    end

Type Parameters

T

The type of elements in the hash set.

The HashSet(T) type exposes the following members.

  NameDescription
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsHashSet(T)()Initializes a new instance of the HashSet(T) class that is empty and uses the default equality comparer for the set type.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsHashSet(T)(IEnumerable(T))Initializes a new instance of the HashSet(T) class that uses the default equality comparer for the set type, contains elements copied from the specified collection, and has sufficient capacity to accommodate the number of elements copied.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsHashSet(T)(IEqualityComparer(T))Initializes a new instance of the HashSet(T) class that is empty and uses the specified equality comparer for the set type.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsHashSet(T)(IEnumerable(T), IEqualityComparer(T))Initializes a new instance of the HashSet(T) class that uses the specified equality comparer for the set type, contains elements copied from the specified collection, and has sufficient capacity to accommodate the number of elements copied.
Protected methodHashSet(T)(SerializationInfo, StreamingContext)Initializes a new instance of the HashSet(T) class with serialized data.
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  NameDescription
Public propertySupported by Portable Class LibrarySupported in .NET for Windows Store appsComparerGets the IEqualityComparer(T) object that is used to determine equality for the values in the set.
Public propertySupported by Portable Class LibrarySupported in .NET for Windows Store appsCountGets the number of elements that are contained in a set.
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  NameDescription
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAddAdds the specified element to a set.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsClearRemoves all elements from a HashSet(T) object.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsContainsDetermines whether a HashSet(T) object contains the specified element.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsCopyTo(T[])Copies the elements of a HashSet(T) object to an array.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsCopyTo(T[], Int32)Copies the elements of a HashSet(T) object to an array, starting at the specified array index.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsCopyTo(T[], Int32, Int32)Copies the specified number of elements of a HashSet(T) object to an array, starting at the specified array index.
Public methodStatic memberCreateSetComparerReturns an IEqualityComparer object that can be used for equality testing of a HashSet(T) object.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsExceptWithRemoves all elements in the specified collection from the current HashSet(T) object.
Protected methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGetEnumeratorReturns an enumerator that iterates through a HashSet(T) object.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetObjectDataImplements the System.Runtime.Serialization.ISerializable interface and returns the data needed to serialize a HashSet(T) object.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsIntersectWithModifies the current HashSet(T) object to contain only elements that are present in that object and in the specified collection.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsIsProperSubsetOfDetermines whether a HashSet(T) object is a proper subset of the specified collection.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsIsProperSupersetOfDetermines whether a HashSet(T) object is a proper superset of the specified collection.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsIsSubsetOfDetermines whether a HashSet(T) object is a subset of the specified collection.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsIsSupersetOfDetermines whether a HashSet(T) object is a superset of the specified collection.
Protected methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodOnDeserializationImplements the System.Runtime.Serialization.ISerializable interface and raises the deserialization event when the deserialization is complete.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsOverlapsDetermines whether the current HashSet(T) object and a specified collection share common elements.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsRemoveRemoves the specified element from a HashSet(T) object.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsRemoveWhereRemoves all elements that match the conditions defined by the specified predicate from a HashSet(T) collection.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSetEqualsDetermines whether a HashSet(T) object and the specified collection contain the same elements.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSymmetricExceptWithModifies the current HashSet(T) object to contain only elements that are present either in that object or in the specified collection, but not both.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToStringReturns a string that represents the current object. (Inherited from Object.)
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsTrimExcessSets the capacity of a HashSet(T) object to the actual number of elements it contains, rounded up to a nearby, implementation-specific value.
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsUnionWithModifies the current HashSet(T) object to contain all elements that are present in itself, the specified collection, or both.
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  NameDescription
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAggregate(T)(Func(T, T, T))Overloaded. Applies an accumulator function over a sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAggregate(T)(Func(T, T, T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAggregate(T, TAccumulate)(TAccumulate, Func(TAccumulate, T, TAccumulate))Overloaded. Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAggregate(T, TAccumulate)(TAccumulate, Func(TAccumulate, T, TAccumulate))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAggregate(T, TAccumulate, TResult)(TAccumulate, Func(TAccumulate, T, TAccumulate), Func(TAccumulate, TResult))Overloaded. Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value, and the specified function is used to select the result value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAggregate(T, TAccumulate, TResult)(TAccumulate, Func(TAccumulate, T, TAccumulate), Func(TAccumulate, TResult))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAll(T)(Func(T, Boolean))Overloaded. Determines whether all elements of a sequence satisfy a condition. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAll(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAny(T)()Overloaded. Determines whether a sequence contains any elements. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAny(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAny(T)(Func(T, Boolean))Overloaded. Determines whether any element of a sequence satisfies a condition. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAny(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAsEnumerable(T)()Overloaded. Returns the input typed as IEnumerable(T). (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAsEnumerable(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAsParallel()Overloaded. Enables parallelization of a query. (Defined by ParallelEnumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAsParallel()Overloaded. (Defined by ParallelEnumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAsParallel(T)()Overloaded. Enables parallelization of a query. (Defined by ParallelEnumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAsParallel(T)()Overloaded. (Defined by ParallelEnumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAsQueryable()Overloaded. Converts an IEnumerable to an IQueryable. (Defined by Queryable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAsQueryable()Overloaded. (Defined by Queryable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAsQueryable(T)()Overloaded. Converts a generic IEnumerable(T) to a generic IQueryable(T). (Defined by Queryable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAsQueryable(T)()Overloaded. (Defined by Queryable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Decimal))Overloaded. Computes the average of a sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Nullable(Decimal)))Overloaded. Computes the average of a sequence of nullable Decimal values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Decimal))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Nullable(Decimal)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Double))Overloaded. Computes the average of a sequence of Double values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Nullable(Double)))Overloaded. Computes the average of a sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Double))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Nullable(Double)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Int32))Overloaded. Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Nullable(Int32)))Overloaded. Computes the average of a sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Int64))Overloaded. Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Nullable(Int64)))Overloaded. Computes the average of a sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Single))Overloaded. Computes the average of a sequence of Single values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Nullable(Single)))Overloaded. Computes the average of a sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Int32))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Int64))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Nullable(Int32)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Nullable(Int64)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Nullable(Single)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsAverage(T)(Func(T, Single))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsCast(TResult)()Overloaded. Casts the elements of an IEnumerable to the specified type. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsCast(TResult)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsConcat(T)(IEnumerable(T))Overloaded. Concatenates two sequences. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsConcat(T)(IEnumerable(T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsContains(T)(T)Overloaded. Determines whether a sequence contains a specified element by using the default equality comparer. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsContains(T)(T)Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsContains(T)(T, IEqualityComparer(T))Overloaded. Determines whether a sequence contains a specified element by using a specified IEqualityComparer(T). (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsContains(T)(T, IEqualityComparer(T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsCount(T)()Overloaded. Returns the number of elements in a sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsCount(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsCount(T)(Func(T, Boolean))Overloaded. Returns a number that represents how many elements in the specified sequence satisfy a condition. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsCount(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsDefaultIfEmpty(T)()Overloaded. Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsDefaultIfEmpty(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsDefaultIfEmpty(T)(T)Overloaded. Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsDefaultIfEmpty(T)(T)Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsDistinct(T)()Overloaded. Returns distinct elements from a sequence by using the default equality comparer to compare values. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsDistinct(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsDistinct(T)(IEqualityComparer(T))Overloaded. Returns distinct elements from a sequence by using a specified IEqualityComparer(T) to compare values. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsDistinct(T)(IEqualityComparer(T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsElementAt(T)(Int32)Overloaded. Returns the element at a specified index in a sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsElementAt(T)(Int32)Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsElementAtOrDefault(T)(Int32)Overloaded. Returns the element at a specified index in a sequence or a default value if the index is out of range. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsElementAtOrDefault(T)(Int32)Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsExcept(T)(IEnumerable(T))Overloaded. Produces the set difference of two sequences by using the default equality comparer to compare values. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsExcept(T)(IEnumerable(T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsExcept(T)(IEnumerable(T), IEqualityComparer(T))Overloaded. Produces the set difference of two sequences by using the specified IEqualityComparer(T) to compare values. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsExcept(T)(IEnumerable(T), IEqualityComparer(T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsFirst(T)()Overloaded. Returns the first element of a sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsFirst(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsFirst(T)(Func(T, Boolean))Overloaded. Returns the first element in a sequence that satisfies a specified condition. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsFirst(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsFirstOrDefault(T)()Overloaded. Returns the first element of a sequence, or a default value if the sequence contains no elements. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsFirstOrDefault(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsFirstOrDefault(T)(Func(T, Boolean))Overloaded. Returns the first element of the sequence that satisfies a condition or a default value if no such element is found. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsFirstOrDefault(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey)(Func(T, TKey))Overloaded. Groups the elements of a sequence according to a specified key selector function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey)(Func(T, TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey)(Func(T, TKey), IEqualityComparer(TKey))Overloaded. Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey)(Func(T, TKey), IEqualityComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TElement)(Func(T, TKey), Func(T, TElement))Overloaded. Groups the elements of a sequence according to a specified key selector function and projects the elements for each group by using a specified function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TResult)(Func(T, TKey), Func(TKey, IEnumerable(T), TResult))Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TElement)(Func(T, TKey), Func(T, TElement))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TResult)(Func(T, TKey), Func(TKey, IEnumerable(T), TResult))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TElement)(Func(T, TKey), Func(T, TElement), IEqualityComparer(TKey))Overloaded. Groups the elements of a sequence according to a key selector function. The keys are compared by using a comparer and each group's elements are projected by using a specified function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TResult)(Func(T, TKey), Func(TKey, IEnumerable(T), TResult), IEqualityComparer(TKey))Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The keys are compared by using a specified comparer. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TElement)(Func(T, TKey), Func(T, TElement), IEqualityComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TResult)(Func(T, TKey), Func(TKey, IEnumerable(T), TResult), IEqualityComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TElement, TResult)(Func(T, TKey), Func(T, TElement), Func(TKey, IEnumerable(TElement), TResult))Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The elements of each group are projected by using a specified function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TElement, TResult)(Func(T, TKey), Func(T, TElement), Func(TKey, IEnumerable(TElement), TResult))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TElement, TResult)(Func(T, TKey), Func(T, TElement), Func(TKey, IEnumerable(TElement), TResult), IEqualityComparer(TKey))Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. Key values are compared by using a specified comparer, and the elements of each group are projected by using a specified function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupBy(T, TKey, TElement, TResult)(Func(T, TKey), Func(T, TElement), Func(TKey, IEnumerable(TElement), TResult), IEqualityComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupJoin(T, TInner, TKey, TResult)(IEnumerable(TInner), Func(T, TKey), Func(TInner, TKey), Func(T, IEnumerable(TInner), TResult))Overloaded. Correlates the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupJoin(T, TInner, TKey, TResult)(IEnumerable(TInner), Func(T, TKey), Func(TInner, TKey), Func(T, IEnumerable(TInner), TResult))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupJoin(T, TInner, TKey, TResult)(IEnumerable(TInner), Func(T, TKey), Func(TInner, TKey), Func(T, IEnumerable(TInner), TResult), IEqualityComparer(TKey))Overloaded. Correlates the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer(T) is used to compare keys. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGroupJoin(T, TInner, TKey, TResult)(IEnumerable(TInner), Func(T, TKey), Func(TInner, TKey), Func(T, IEnumerable(TInner), TResult), IEqualityComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsIntersect(T)(IEnumerable(T))Overloaded. Produces the set intersection of two sequences by using the default equality comparer to compare values. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsIntersect(T)(IEnumerable(T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsIntersect(T)(IEnumerable(T), IEqualityComparer(T))Overloaded. Produces the set intersection of two sequences by using the specified IEqualityComparer(T) to compare values. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsIntersect(T)(IEnumerable(T), IEqualityComparer(T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsJoin(T, TInner, TKey, TResult)(IEnumerable(TInner), Func(T, TKey), Func(TInner, TKey), Func(T, TInner, TResult))Overloaded. Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsJoin(T, TInner, TKey, TResult)(IEnumerable(TInner), Func(T, TKey), Func(TInner, TKey), Func(T, TInner, TResult))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsJoin(T, TInner, TKey, TResult)(IEnumerable(TInner), Func(T, TKey), Func(TInner, TKey), Func(T, TInner, TResult), IEqualityComparer(TKey))Overloaded. Correlates the elements of two sequences based on matching keys. A specified IEqualityComparer(T) is used to compare keys. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsJoin(T, TInner, TKey, TResult)(IEnumerable(TInner), Func(T, TKey), Func(TInner, TKey), Func(T, TInner, TResult), IEqualityComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLast(T)()Overloaded. Returns the last element of a sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLast(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLast(T)(Func(T, Boolean))Overloaded. Returns the last element of a sequence that satisfies a specified condition. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLast(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLastOrDefault(T)()Overloaded. Returns the last element of a sequence, or a default value if the sequence contains no elements. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLastOrDefault(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLastOrDefault(T)(Func(T, Boolean))Overloaded. Returns the last element of a sequence that satisfies a condition or a default value if no such element is found. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLastOrDefault(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLongCount(T)()Overloaded. Returns an Int64 that represents the total number of elements in a sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLongCount(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLongCount(T)(Func(T, Boolean))Overloaded. Returns an Int64 that represents how many elements in a sequence satisfy a condition. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsLongCount(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)()Overloaded. Returns the maximum value in a generic sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Decimal))Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Decimal value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Nullable(Decimal)))Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Decimal))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Nullable(Decimal)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Double))Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Double value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Nullable(Double)))Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Double value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Double))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Nullable(Double)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Int32))Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int32 value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Nullable(Int32)))Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int32 value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Int64))Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int64 value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Nullable(Int64)))Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int64 value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Single))Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Single value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Nullable(Single)))Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Single value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Int32))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Int64))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Nullable(Int32)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Nullable(Int64)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Nullable(Single)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T)(Func(T, Single))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T, TResult)(Func(T, TResult))Overloaded. Invokes a transform function on each element of a generic sequence and returns the maximum resulting value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMax(T, TResult)(Func(T, TResult))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)()Overloaded. Returns the minimum value in a generic sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Decimal))Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Decimal value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Nullable(Decimal)))Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Decimal value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Decimal))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Nullable(Decimal)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Double))Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Double value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Nullable(Double)))Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Double value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Double))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Nullable(Double)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Int32))Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int32 value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Nullable(Int32)))Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int32 value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Int64))Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int64 value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Nullable(Int64)))Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int64 value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Single))Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Single value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Nullable(Single)))Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Single value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Int32))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Int64))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Nullable(Int32)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Nullable(Int64)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Nullable(Single)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T)(Func(T, Single))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T, TResult)(Func(T, TResult))Overloaded. Invokes a transform function on each element of a generic sequence and returns the minimum resulting value. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsMin(T, TResult)(Func(T, TResult))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsOfType(TResult)()Overloaded. Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsOfType(TResult)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsOrderBy(T, TKey)(Func(T, TKey))Overloaded. Sorts the elements of a sequence in ascending order according to a key. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsOrderBy(T, TKey)(Func(T, TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsOrderBy(T, TKey)(Func(T, TKey), IComparer(TKey))Overloaded. Sorts the elements of a sequence in ascending order by using a specified comparer. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsOrderBy(T, TKey)(Func(T, TKey), IComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsOrderByDescending(T, TKey)(Func(T, TKey))Overloaded. Sorts the elements of a sequence in descending order according to a key. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsOrderByDescending(T, TKey)(Func(T, TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsOrderByDescending(T, TKey)(Func(T, TKey), IComparer(TKey))Overloaded. Sorts the elements of a sequence in descending order by using a specified comparer. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsOrderByDescending(T, TKey)(Func(T, TKey), IComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsReverse(T)()Overloaded. Inverts the order of the elements in a sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsReverse(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelect(T, TResult)(Func(T, TResult))Overloaded. Projects each element of a sequence into a new form. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelect(T, TResult)(Func(T, Int32, TResult))Overloaded. Projects each element of a sequence into a new form by incorporating the element's index. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelect(T, TResult)(Func(T, TResult))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelect(T, TResult)(Func(T, Int32, TResult))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelectMany(T, TResult)(Func(T, IEnumerable(TResult)))Overloaded. Projects each element of a sequence to an IEnumerable(T) and flattens the resulting sequences into one sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelectMany(T, TResult)(Func(T, Int32, IEnumerable(TResult)))Overloaded. Projects each element of a sequence to an IEnumerable(T), and flattens the resulting sequences into one sequence. The index of each source element is used in the projected form of that element. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelectMany(T, TResult)(Func(T, IEnumerable(TResult)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelectMany(T, TResult)(Func(T, Int32, IEnumerable(TResult)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelectMany(T, TCollection, TResult)(Func(T, Int32, IEnumerable(TCollection)), Func(T, TCollection, TResult))Overloaded. Projects each element of a sequence to an IEnumerable(T), flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein. The index of each source element is used in the intermediate projected form of that element. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelectMany(T, TCollection, TResult)(Func(T, IEnumerable(TCollection)), Func(T, TCollection, TResult))Overloaded. Projects each element of a sequence to an IEnumerable(T), flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelectMany(T, TCollection, TResult)(Func(T, IEnumerable(TCollection)), Func(T, TCollection, TResult))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSelectMany(T, TCollection, TResult)(Func(T, Int32, IEnumerable(TCollection)), Func(T, TCollection, TResult))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSequenceEqual(T)(IEnumerable(T))Overloaded. Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSequenceEqual(T)(IEnumerable(T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSequenceEqual(T)(IEnumerable(T), IEqualityComparer(T))Overloaded. Determines whether two sequences are equal by comparing their elements by using a specified IEqualityComparer(T). (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSequenceEqual(T)(IEnumerable(T), IEqualityComparer(T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSingle(T)()Overloaded. Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSingle(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSingle(T)(Func(T, Boolean))Overloaded. Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSingle(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSingleOrDefault(T)()Overloaded. Returns the only element of a sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSingleOrDefault(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSingleOrDefault(T)(Func(T, Boolean))Overloaded. Returns the only element of a sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSingleOrDefault(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSkip(T)(Int32)Overloaded. Bypasses a specified number of elements in a sequence and then returns the remaining elements. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSkip(T)(Int32)Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSkipWhile(T)(Func(T, Boolean))Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSkipWhile(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSkipWhile(T)(Func(T, Int32, Boolean))Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. The element's index is used in the logic of the predicate function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSkipWhile(T)(Func(T, Int32, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Decimal))Overloaded. Computes the sum of the sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Nullable(Decimal)))Overloaded. Computes the sum of the sequence of nullable Decimal values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Decimal))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Nullable(Decimal)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Double))Overloaded. Computes the sum of the sequence of Double values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Nullable(Double)))Overloaded. Computes the sum of the sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Double))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Nullable(Double)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Int32))Overloaded. Computes the sum of the sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Nullable(Int32)))Overloaded. Computes the sum of the sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Int64))Overloaded. Computes the sum of the sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Nullable(Int64)))Overloaded. Computes the sum of the sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Single))Overloaded. Computes the sum of the sequence of Single values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Nullable(Single)))Overloaded. Computes the sum of the sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Int32))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Int64))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Nullable(Int32)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Nullable(Int64)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Nullable(Single)))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsSum(T)(Func(T, Single))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsTake(T)(Int32)Overloaded. Returns a specified number of contiguous elements from the start of a sequence. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsTake(T)(Int32)Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsTakeWhile(T)(Func(T, Boolean))Overloaded. Returns elements from a sequence as long as a specified condition is true. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsTakeWhile(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsTakeWhile(T)(Func(T, Int32, Boolean))Overloaded. Returns elements from a sequence as long as a specified condition is true. The element's index is used in the logic of the predicate function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsTakeWhile(T)(Func(T, Int32, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToArray(T)()Overloaded. Creates an array from a IEnumerable(T). (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToArray(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToDictionary(T, TKey)(Func(T, TKey))Overloaded. Creates a Dictionary(TKey, TValue) from an IEnumerable(T) according to a specified key selector function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToDictionary(T, TKey)(Func(T, TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToDictionary(T, TKey)(Func(T, TKey), IEqualityComparer(TKey))Overloaded. Creates a Dictionary(TKey, TValue) from an IEnumerable(T) according to a specified key selector function and key comparer. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToDictionary(T, TKey)(Func(T, TKey), IEqualityComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToDictionary(T, TKey, TElement)(Func(T, TKey), Func(T, TElement))Overloaded. Creates a Dictionary(TKey, TValue) from an IEnumerable(T) according to specified key selector and element selector functions. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToDictionary(T, TKey, TElement)(Func(T, TKey), Func(T, TElement))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToDictionary(T, TKey, TElement)(Func(T, TKey), Func(T, TElement), IEqualityComparer(TKey))Overloaded. Creates a Dictionary(TKey, TValue) from an IEnumerable(T) according to a specified key selector function, a comparer, and an element selector function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToDictionary(T, TKey, TElement)(Func(T, TKey), Func(T, TElement), IEqualityComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToList(T)()Overloaded. Creates a List(T) from an IEnumerable(T). (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToList(T)()Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToLookup(T, TKey)(Func(T, TKey))Overloaded. Creates a Lookup(TKey, TElement) from an IEnumerable(T) according to a specified key selector function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToLookup(T, TKey)(Func(T, TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToLookup(T, TKey)(Func(T, TKey), IEqualityComparer(TKey))Overloaded. Creates a Lookup(TKey, TElement) from an IEnumerable(T) according to a specified key selector function and key comparer. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToLookup(T, TKey)(Func(T, TKey), IEqualityComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToLookup(T, TKey, TElement)(Func(T, TKey), Func(T, TElement))Overloaded. Creates a Lookup(TKey, TElement) from an IEnumerable(T) according to specified key selector and element selector functions. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToLookup(T, TKey, TElement)(Func(T, TKey), Func(T, TElement))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToLookup(T, TKey, TElement)(Func(T, TKey), Func(T, TElement), IEqualityComparer(TKey))Overloaded. Creates a Lookup(TKey, TElement) from an IEnumerable(T) according to a specified key selector function, a comparer and an element selector function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToLookup(T, TKey, TElement)(Func(T, TKey), Func(T, TElement), IEqualityComparer(TKey))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsUnion(T)(IEnumerable(T))Overloaded. Produces the set union of two sequences by using the default equality comparer. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsUnion(T)(IEnumerable(T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsUnion(T)(IEnumerable(T), IEqualityComparer(T))Overloaded. Produces the set union of two sequences by using a specified IEqualityComparer(T). (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsUnion(T)(IEnumerable(T), IEqualityComparer(T))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsWhere(T)(Func(T, Boolean))Overloaded. Filters a sequence of values based on a predicate. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsWhere(T)(Func(T, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsWhere(T)(Func(T, Int32, Boolean))Overloaded. Filters a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsWhere(T)(Func(T, Int32, Boolean))Overloaded. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsZip(T, TSecond, TResult)(IEnumerable(TSecond), Func(T, TSecond, TResult))Overloaded. Applies a specified function to the corresponding elements of two sequences, producing a sequence of the results. (Defined by Enumerable.)
Public Extension MethodSupported by Portable Class LibrarySupported in .NET for Windows Store appsZip(T, TSecond, TResult)(IEnumerable(TSecond), Func(T, TSecond, TResult))Overloaded. (Defined by Enumerable.)
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  NameDescription
Explicit interface implemetationPrivate methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsICollection(T).AddAdds an item to an ICollection(T) object.
Explicit interface implemetationPrivate propertySupported by Portable Class LibrarySupported in .NET for Windows Store appsICollection(T).IsReadOnlyGets a value indicating whether a collection is read-only.
Explicit interface implemetationPrivate methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsIEnumerable(T).GetEnumeratorReturns an enumerator that iterates through a collection.
Explicit interface implemetationPrivate methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsIEnumerable.GetEnumeratorReturns an enumerator that iterates through a collection.
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NoteNote

To view the .NET Framework source code for this type, see the Reference Source. You can browse through the source code online, download the reference for offline viewing, and step through the sources (including patches and updates) during debugging; see instructions.

The HashSet(T) class provides high-performance set operations. A set is a collection that contains no duplicate elements, and whose elements are in no particular order.

The capacity of a HashSet(T) object is the number of elements that the object can hold. A HashSet(T) object's capacity automatically increases as elements are added to the object.

The HashSet(T) class is based on the model of mathematical sets and provides high-performance set operations similar to accessing the keys of the Dictionary(TKey, TValue) or Hashtable collections. In simple terms, the HashSet(T) class can be thought of as a Dictionary(TKey, TValue) collection without values.

A HashSet(T) collection is not sorted and cannot contain duplicate elements. If order or element duplication is more important than performance for your application, consider using the List(T) class together with the Sort method.

HashSet(T) provides many mathematical set operations, such as set addition (unions) and set subtraction. The following table lists the provided HashSet(T) operations and their mathematical equivalents.

HashSet(Of T) operation

Mathematical equivalent

UnionWith

Union or set addition

IntersectWith

Intersection

ExceptWith

Set subtraction

SymmetricExceptWith

Symmetric difference

In addition to the listed set operations, the HashSet(T) class also provides methods for determining set equality, overlap of sets, and whether a set is a subset or superset of another set.

For very large HashSet(T) objects, you can increase the maximum capacity to 2 billion elements on a 64-bit system by setting the enabled attribute of the gcAllowVeryLargeObjects configuration element to true in the run-time environment.

Starting with the .NET Framework 4, the HashSet(T) class implements the ISet(T) interface.

HashSet and LINQ Set Operations

LINQ provides access to the Distinct, Union, Intersect and Except set operations on any data source that implements the IEnumerable or IQueryable interfaces. HashSet(T) provides a larger and more robust collection of set operations. For example, HashSet(T) provides comparisons such as IsSubsetOf and IsSupersetOf.

The primary difference between LINQ set operations and HashSet(T) operations is that LINQ set operations always return a new IEnumerable(T) collection, whereas the HashSet(T) equivalent methods modify the current collection.

Typically, if you must create a new set or if your application needs access only to the provided set operations, using LINQ set operations on any IEnumerable(T) collection or array will be sufficient. However, if your application requires access to additional set operations, or if it is not desirable or necessary to create a new collection, use the HashSet(T) class.

The following table shows the HashSet(T) operations and their equivalent LINQ set operations.

HashSet(Of T) operation

LINQ equivalent

UnionWith

Union

IntersectWith

Intersect

ExceptWith

Except

Not provided.

Distinct

SymmetricExceptWith

Not provided.

Overlaps

Not provided.

IsSubsetOf

Not provided.

IsProperSubsetOf

Not provided.

IsSupersetOf

Not provided.

IsProperSupersetOf

Not provided.

SetEquals

Not provided.

The following example demonstrates how to merge two disparate sets. This example creates two HashSet(T) objects, and populates them with even and odd numbers, respectively. A third HashSet(T) object is created from the set that contains the even numbers. The example then calls the UnionWith method, which adds the odd number set to the third set.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.5.3, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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