Export (0) Print
Expand All

Enumerable Class

Provides a set of static (Shared in Visual Basic) methods for querying objects that implement IEnumerable<T>.

System.Object
  System.Linq.Enumerable

Namespace:  System.Linq
Assembly:  System.Core (in System.Core.dll)

public static class Enumerable

The Enumerable type exposes the following members.

  NameDescription
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAggregate<TSource>(IEnumerable<TSource>, Func<TSource, TSource, TSource>)Applies an accumulator function over a sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAggregate<TSource, TAccumulate>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>)Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAggregate<TSource, TAccumulate, TResult>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate, TSource, TAccumulate>, Func<TAccumulate, TResult>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAll<TSource>Determines whether all elements of a sequence satisfy a condition.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAny<TSource>(IEnumerable<TSource>)Determines whether a sequence contains any elements.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAny<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)Determines whether any element of a sequence satisfies a condition.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAsEnumerable<TSource>Returns the input typed as IEnumerable<T>.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage(IEnumerable<Decimal>)Computes the average of a sequence of Decimal values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage(IEnumerable<Nullable<Decimal>>)Computes the average of a sequence of nullable Decimal values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage(IEnumerable<Double>)Computes the average of a sequence of Double values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage(IEnumerable<Nullable<Double>>)Computes the average of a sequence of nullable Double values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage(IEnumerable<Int32>)Computes the average of a sequence of Int32 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage(IEnumerable<Nullable<Int32>>)Computes the average of a sequence of nullable Int32 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage(IEnumerable<Int64>)Computes the average of a sequence of Int64 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage(IEnumerable<Nullable<Int64>>)Computes the average of a sequence of nullable Int64 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage(IEnumerable<Nullable<Single>>)Computes the average of a sequence of nullable Single values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage(IEnumerable<Single>)Computes the average of a sequence of Single values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>)Computes the average of a sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage<TSource>(IEnumerable<TSource>, Func<TSource, Double>)Computes the average of a sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage<TSource>(IEnumerable<TSource>, Func<TSource, Int32>)Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage<TSource>(IEnumerable<TSource>, Func<TSource, Int64>)Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryAverage<TSource>(IEnumerable<TSource>, Func<TSource, Single>)Computes the average of a sequence of Single values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryCast<TResult>Casts the elements of an IEnumerable to the specified type.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryConcat<TSource>Concatenates two sequences.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryContains<TSource>(IEnumerable<TSource>, TSource)Determines whether a sequence contains a specified element by using the default equality comparer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryContains<TSource>(IEnumerable<TSource>, TSource, IEqualityComparer<TSource>)Determines whether a sequence contains a specified element by using a specified IEqualityComparer<T>.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryCount<TSource>(IEnumerable<TSource>)Returns the number of elements in a sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryCount<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)Returns a number that represents how many elements in the specified sequence satisfy a condition.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryDefaultIfEmpty<TSource>(IEnumerable<TSource>)Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryDefaultIfEmpty<TSource>(IEnumerable<TSource>, TSource)Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryDistinct<TSource>(IEnumerable<TSource>)Returns distinct elements from a sequence by using the default equality comparer to compare values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryDistinct<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>)Returns distinct elements from a sequence by using a specified IEqualityComparer<T> to compare values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryElementAt<TSource>Returns the element at a specified index in a sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryElementAtOrDefault<TSource>Returns the element at a specified index in a sequence or a default value if the index is out of range.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryEmpty<TResult>Returns an empty IEnumerable<T> that has the specified type argument.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryExcept<TSource>(IEnumerable<TSource>, IEnumerable<TSource>)Produces the set difference of two sequences by using the default equality comparer to compare values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryExcept<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)Produces the set difference of two sequences by using the specified IEqualityComparer<T> to compare values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryFirst<TSource>(IEnumerable<TSource>)Returns the first element of a sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryFirst<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)Returns the first element in a sequence that satisfies a specified condition.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryFirstOrDefault<TSource>(IEnumerable<TSource>)Returns the first element of a sequence, or a default value if the sequence contains no elements.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryFirstOrDefault<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)Returns the first element of the sequence that satisfies a condition or a default value if no such element is found.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryGroupBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>)Groups the elements of a sequence according to a specified key selector function.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryGroupBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IEqualityComparer<TKey>)Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryGroupBy<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryGroupBy<TSource, TKey, TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TKey, IEnumerable<TSource>, TResult>)Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryGroupBy<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, IEqualityComparer<TKey>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryGroupBy<TSource, TKey, TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TKey, IEnumerable<TSource>, TResult>, IEqualityComparer<TKey>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryGroupBy<TSource, TKey, TElement, TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, Func<TKey, IEnumerable<TElement>, TResult>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryGroupBy<TSource, TKey, TElement, TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, Func<TKey, IEnumerable<TElement>, TResult>, IEqualityComparer<TKey>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryGroupJoin<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, IEnumerable<TInner>, TResult>)Correlates the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryGroupJoin<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>)Correlates the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer<T> is used to compare keys.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryIntersect<TSource>(IEnumerable<TSource>, IEnumerable<TSource>)Produces the set intersection of two sequences by using the default equality comparer to compare values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryIntersect<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)Produces the set intersection of two sequences by using the specified IEqualityComparer<T> to compare values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryJoin<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, TInner, TResult>)Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryJoin<TOuter, TInner, TKey, TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter, TKey>, Func<TInner, TKey>, Func<TOuter, TInner, TResult>, IEqualityComparer<TKey>)Correlates the elements of two sequences based on matching keys. A specified IEqualityComparer<T> is used to compare keys.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryLast<TSource>(IEnumerable<TSource>)Returns the last element of a sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryLast<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)Returns the last element of a sequence that satisfies a specified condition.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryLastOrDefault<TSource>(IEnumerable<TSource>)Returns the last element of a sequence, or a default value if the sequence contains no elements.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryLastOrDefault<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)Returns the last element of a sequence that satisfies a condition or a default value if no such element is found.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryLongCount<TSource>(IEnumerable<TSource>)Returns an Int64 that represents the total number of elements in a sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryLongCount<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)Returns an Int64 that represents how many elements in a sequence satisfy a condition.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax(IEnumerable<Decimal>)Returns the maximum value in a sequence of Decimal values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax(IEnumerable<Nullable<Decimal>>)Returns the maximum value in a sequence of nullable Decimal values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax(IEnumerable<Double>)Returns the maximum value in a sequence of Double values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax(IEnumerable<Nullable<Double>>)Returns the maximum value in a sequence of nullable Double values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax(IEnumerable<Int32>)Returns the maximum value in a sequence of Int32 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax(IEnumerable<Nullable<Int32>>)Returns the maximum value in a sequence of nullable Int32 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax(IEnumerable<Int64>)Returns the maximum value in a sequence of Int64 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax(IEnumerable<Nullable<Int64>>)Returns the maximum value in a sequence of nullable Int64 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax(IEnumerable<Nullable<Single>>)Returns the maximum value in a sequence of nullable Single values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax(IEnumerable<Single>)Returns the maximum value in a sequence of Single values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource>(IEnumerable<TSource>)Returns the maximum value in a generic sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>)Invokes a transform function on each element of a sequence and returns the maximum Decimal value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource>(IEnumerable<TSource>, Func<TSource, Double>)Invokes a transform function on each element of a sequence and returns the maximum Double value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource>(IEnumerable<TSource>, Func<TSource, Int32>)Invokes a transform function on each element of a sequence and returns the maximum Int32 value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource>(IEnumerable<TSource>, Func<TSource, Int64>)Invokes a transform function on each element of a sequence and returns the maximum Int64 value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>)Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>)Invokes a transform function on each element of a sequence and returns the maximum nullable Double value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>)Invokes a transform function on each element of a sequence and returns the maximum nullable Int32 value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>)Invokes a transform function on each element of a sequence and returns the maximum nullable Int64 value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>)Invokes a transform function on each element of a sequence and returns the maximum nullable Single value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource>(IEnumerable<TSource>, Func<TSource, Single>)Invokes a transform function on each element of a sequence and returns the maximum Single value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMax<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>)Invokes a transform function on each element of a generic sequence and returns the maximum resulting value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin(IEnumerable<Decimal>)Returns the minimum value in a sequence of Decimal values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin(IEnumerable<Nullable<Decimal>>)Returns the minimum value in a sequence of nullable Decimal values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin(IEnumerable<Double>)Returns the minimum value in a sequence of Double values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin(IEnumerable<Nullable<Double>>)Returns the minimum value in a sequence of nullable Double values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin(IEnumerable<Int32>)Returns the minimum value in a sequence of Int32 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin(IEnumerable<Nullable<Int32>>)Returns the minimum value in a sequence of nullable Int32 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin(IEnumerable<Int64>)Returns the minimum value in a sequence of Int64 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin(IEnumerable<Nullable<Int64>>)Returns the minimum value in a sequence of nullable Int64 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin(IEnumerable<Nullable<Single>>)Returns the minimum value in a sequence of nullable Single values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin(IEnumerable<Single>)Returns the minimum value in a sequence of Single values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource>(IEnumerable<TSource>)Returns the minimum value in a generic sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>)Invokes a transform function on each element of a sequence and returns the minimum Decimal value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource>(IEnumerable<TSource>, Func<TSource, Double>)Invokes a transform function on each element of a sequence and returns the minimum Double value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource>(IEnumerable<TSource>, Func<TSource, Int32>)Invokes a transform function on each element of a sequence and returns the minimum Int32 value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource>(IEnumerable<TSource>, Func<TSource, Int64>)Invokes a transform function on each element of a sequence and returns the minimum Int64 value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>)Invokes a transform function on each element of a sequence and returns the minimum nullable Decimal value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>)Invokes a transform function on each element of a sequence and returns the minimum nullable Double value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>)Invokes a transform function on each element of a sequence and returns the minimum nullable Int32 value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>)Invokes a transform function on each element of a sequence and returns the minimum nullable Int64 value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>)Invokes a transform function on each element of a sequence and returns the minimum nullable Single value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource>(IEnumerable<TSource>, Func<TSource, Single>)Invokes a transform function on each element of a sequence and returns the minimum Single value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryMin<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>)Invokes a transform function on each element of a generic sequence and returns the minimum resulting value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryOfType<TResult>Filters the elements of an IEnumerable based on a specified type.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryOrderBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>)Sorts the elements of a sequence in ascending order according to a key.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryOrderBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>)Sorts the elements of a sequence in ascending order by using a specified comparer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryOrderByDescending<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>)Sorts the elements of a sequence in descending order according to a key.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryOrderByDescending<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>)Sorts the elements of a sequence in descending order by using a specified comparer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryRangeGenerates a sequence of integral numbers within a specified range.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryRepeat<TResult>Generates a sequence that contains one repeated value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryReverse<TSource>Inverts the order of the elements in a sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySelect<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>)Projects each element of a sequence into a new form.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySelect<TSource, TResult>(IEnumerable<TSource>, Func<TSource, Int32, TResult>)Projects each element of a sequence into a new form by incorporating the element's index.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySelectMany<TSource, TResult>(IEnumerable<TSource>, Func<TSource, IEnumerable<TResult>>)Projects each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySelectMany<TSource, TResult>(IEnumerable<TSource>, Func<TSource, Int32, IEnumerable<TResult>>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySelectMany<TSource, TCollection, TResult>(IEnumerable<TSource>, Func<TSource, IEnumerable<TCollection>>, Func<TSource, TCollection, TResult>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySelectMany<TSource, TCollection, TResult>(IEnumerable<TSource>, Func<TSource, Int32, IEnumerable<TCollection>>, Func<TSource, TCollection, TResult>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySequenceEqual<TSource>(IEnumerable<TSource>, IEnumerable<TSource>)Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySequenceEqual<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)Determines whether two sequences are equal by comparing their elements by using a specified IEqualityComparer<T>.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySingle<TSource>(IEnumerable<TSource>)Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySingle<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySingleOrDefault<TSource>(IEnumerable<TSource>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySingleOrDefault<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySkip<TSource>Bypasses a specified number of elements in a sequence and then returns the remaining elements.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySkipWhile<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySkipWhile<TSource>(IEnumerable<TSource>, Func<TSource, Int32, Boolean>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum(IEnumerable<Decimal>)Computes the sum of a sequence of Decimal values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum(IEnumerable<Nullable<Decimal>>)Computes the sum of a sequence of nullable Decimal values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum(IEnumerable<Double>)Computes the sum of a sequence of Double values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum(IEnumerable<Nullable<Double>>)Computes the sum of a sequence of nullable Double values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum(IEnumerable<Int32>)Computes the sum of a sequence of Int32 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum(IEnumerable<Nullable<Int32>>)Computes the sum of a sequence of nullable Int32 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum(IEnumerable<Int64>)Computes the sum of a sequence of Int64 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum(IEnumerable<Nullable<Int64>>)Computes the sum of a sequence of nullable Int64 values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum(IEnumerable<Nullable<Single>>)Computes the sum of a sequence of nullable Single values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum(IEnumerable<Single>)Computes the sum of a sequence of Single values.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>)Computes the sum of the sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum<TSource>(IEnumerable<TSource>, Func<TSource, Double>)Computes the sum of the sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum<TSource>(IEnumerable<TSource>, Func<TSource, Int32>)Computes the sum of the sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum<TSource>(IEnumerable<TSource>, Func<TSource, Int64>)Computes the sum of the sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySum<TSource>(IEnumerable<TSource>, Func<TSource, Single>)Computes the sum of the sequence of Single values that are obtained by invoking a transform function on each element of the input sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryTake<TSource>Returns a specified number of contiguous elements from the start of a sequence.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryTakeWhile<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)Returns elements from a sequence as long as a specified condition is true.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryTakeWhile<TSource>(IEnumerable<TSource>, Func<TSource, Int32, Boolean>)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.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryThenBy<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>)Performs a subsequent ordering of the elements in a sequence in ascending order according to a key.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryThenBy<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>)Performs a subsequent ordering of the elements in a sequence in ascending order by using a specified comparer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryThenByDescending<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>)Performs a subsequent ordering of the elements in a sequence in descending order, according to a key.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryThenByDescending<TSource, TKey>(IOrderedEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>)Performs a subsequent ordering of the elements in a sequence in descending order by using a specified comparer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryToArray<TSource>Creates an array from a IEnumerable<T>.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryToDictionary<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>)Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryToDictionary<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IEqualityComparer<TKey>)Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function and key comparer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryToDictionary<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>)Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to specified key selector and element selector functions.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryToDictionary<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, IEqualityComparer<TKey>)Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function, a comparer, and an element selector function.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryToList<TSource>Creates a List<T> from an IEnumerable<T>.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryToLookup<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>)Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryToLookup<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IEqualityComparer<TKey>)Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function and key comparer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryToLookup<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>)Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to specified key selector and element selector functions.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryToLookup<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource, TElement>, IEqualityComparer<TKey>)Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function, a comparer and an element selector function.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryUnion<TSource>(IEnumerable<TSource>, IEnumerable<TSource>)Produces the set union of two sequences by using the default equality comparer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryUnion<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>)Produces the set union of two sequences by using a specified IEqualityComparer<T>.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryWhere<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)Filters a sequence of values based on a predicate.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryWhere<TSource>(IEnumerable<TSource>, Func<TSource, Int32, Boolean>)Filters a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function.
Public methodStatic memberZip<TFirst, TSecond, TResult>Applies a specified function to the corresponding elements of two sequences, producing a sequence of the results.
Top

The methods in this class provide an implementation of the standard query operators for querying data sources that implement IEnumerable<T>. The standard query operators are general purpose methods that follow the LINQ pattern and enable you to express traversal, filter, and projection operations over data in any .NET-based programming language.

The majority of the methods in this class are defined as extension methods that extend IEnumerable<T>. This means they can be called like an instance method on any object that implements IEnumerable<T>.

Methods that are used in a query that returns a sequence of values do not consume the target data until the query object is enumerated. This is known as deferred execution. Methods that are used in a query that returns a singleton value execute and consume the target data immediately.

.NET Framework

Supported in: 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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.

Community Additions

ADD
Show:
© 2014 Microsoft