ILookup<TKey, TElement> Interface
Silverlight
Defines an indexer, size property, and Boolean search method for data structures that map keys to IEnumerable<T> sequences of values.
Namespace: System.Linq
Assembly: System.Core (in System.Core.dll)
Type Parameters
- TKey
The type of the keys in the ILookup<TKey, TElement>.
- TElement
The type of the elements in the IEnumerable<T> sequences that make up the values in the ILookup<TKey, TElement>.
The ILookup<TKey, TElement> type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() ![]() | Count | Gets the number of key/value collection pairs in the ILookup<TKey, TElement>. |
![]() ![]() ![]() | Item | Gets the IEnumerable<T> sequence of values indexed by a specified key. |
| Name | Description | |
|---|---|---|
![]() ![]() ![]() | Contains | Determines whether a specified key exists in the ILookup<TKey, TElement>. |
![]() ![]() ![]() | GetEnumerator() | Returns an enumerator that iterates through a collection. (Inherited from IEnumerable.) |
![]() ![]() ![]() | GetEnumerator() | Returns an enumerator that iterates through the collection. (Inherited from IEnumerable<T>.) |
| Name | Description | |
|---|---|---|
![]() ![]() ![]() | Aggregate<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, IGrouping<TKey, TElement>, IGrouping<TKey, TElement>>) | Overloaded. Applies an accumulator function over a sequence. (Defined by Enumerable.) |
![]() ![]() ![]() | Aggregate<IGrouping<TKey, TElement>, TAccumulate>(TAccumulate, Func<TAccumulate, IGrouping<TKey, TElement>, TAccumulate>) | Overloaded. Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value. (Defined by Enumerable.) |
![]() ![]() ![]() | Aggregate<IGrouping<TKey, TElement>, TAccumulate, TResult>(TAccumulate, Func<TAccumulate, IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | All<IGrouping<TKey, TElement>> | Determines whether all elements of a sequence satisfy a condition. (Defined by Enumerable.) |
![]() ![]() ![]() | Any<IGrouping<TKey, TElement>>() | Overloaded. Determines whether a sequence contains any elements. (Defined by Enumerable.) |
![]() ![]() ![]() | Any<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Boolean>) | Overloaded. Determines whether any element of a sequence satisfies a condition. (Defined by Enumerable.) |
![]() ![]() ![]() | AsEnumerable<IGrouping<TKey, TElement>> | Returns the input typed as IEnumerable<T>. (Defined by Enumerable.) |
![]() ![]() | AsQueryable() | Overloaded. Converts an IEnumerable to an IQueryable. (Defined by Queryable.) |
![]() ![]() | AsQueryable<IGrouping<TKey, TElement>>() | Overloaded. Converts a generic IEnumerable<T> to a generic IQueryable<T>. (Defined by Queryable.) |
![]() ![]() ![]() | Average<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Average<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Average<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Average<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Average<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Average<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Average<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Average<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Average<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Average<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Cast<TResult> | Converts the elements of an IEnumerable to the specified type. (Defined by Enumerable.) |
![]() ![]() ![]() | Concat<IGrouping<TKey, TElement>> | Concatenates two sequences. (Defined by Enumerable.) |
![]() ![]() ![]() | Contains<IGrouping<TKey, TElement>>(IGrouping<TKey, TElement>) | Overloaded. Determines whether a sequence contains a specified element by using the default equality comparer. (Defined by Enumerable.) |
![]() ![]() ![]() | Contains<IGrouping<TKey, TElement>>(IGrouping<TKey, TElement>, IEqualityComparer<IGrouping<TKey, TElement>>) | Overloaded. Determines whether a sequence contains a specified element by using a specified IEqualityComparer<T>. (Defined by Enumerable.) |
![]() ![]() ![]() | Count<IGrouping<TKey, TElement>>() | Overloaded. Returns the number of elements in a sequence. (Defined by Enumerable.) |
![]() ![]() ![]() | Count<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Boolean>) | Overloaded. Returns a number that represents how many elements in the specified sequence satisfy a condition. (Defined by Enumerable.) |
![]() ![]() ![]() | DefaultIfEmpty<IGrouping<TKey, TElement>>() | 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.) |
![]() ![]() ![]() | DefaultIfEmpty<IGrouping<TKey, TElement>>(IGrouping<TKey, TElement>) | Overloaded. Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty. (Defined by Enumerable.) |
![]() ![]() ![]() | Distinct<IGrouping<TKey, TElement>>() | Overloaded. Returns distinct elements from a sequence by using the default equality comparer to compare values. (Defined by Enumerable.) |
![]() ![]() ![]() | Distinct<IGrouping<TKey, TElement>>(IEqualityComparer<IGrouping<TKey, TElement>>) | Overloaded. Returns distinct elements from a sequence by using a specified IEqualityComparer<T> to compare values. (Defined by Enumerable.) |
![]() ![]() ![]() | ElementAt<IGrouping<TKey, TElement>> | Returns the element at a specified index in a sequence. (Defined by Enumerable.) |
![]() ![]() ![]() | ElementAtOrDefault<IGrouping<TKey, TElement>> | Returns the element at a specified index in a sequence or a default value if the index is out of range. (Defined by Enumerable.) |
![]() ![]() ![]() | Except<IGrouping<TKey, TElement>>(IEnumerable<IGrouping<TKey, TElement>>) | Overloaded. Produces the set difference of two sequences by using the default equality comparer to compare values. (Defined by Enumerable.) |
![]() ![]() ![]() | Except<IGrouping<TKey, TElement>>(IEnumerable<IGrouping<TKey, TElement>>, IEqualityComparer<IGrouping<TKey, TElement>>) | Overloaded. Produces the set difference of two sequences by using the specified IEqualityComparer<T> to compare values. (Defined by Enumerable.) |
![]() ![]() ![]() | First<IGrouping<TKey, TElement>>() | Overloaded. Returns the first element of a sequence. (Defined by Enumerable.) |
![]() ![]() ![]() | First<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Boolean>) | Overloaded. Returns the first element in a sequence that satisfies a specified condition. (Defined by Enumerable.) |
![]() ![]() ![]() | FirstOrDefault<IGrouping<TKey, TElement>>() | Overloaded. Returns the first element of a sequence, or a default value if the sequence contains no elements. (Defined by Enumerable.) |
![]() ![]() ![]() | FirstOrDefault<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | GroupBy<IGrouping<TKey, TElement>, TKey>(Func<IGrouping<TKey, TElement>, TKey>) | Overloaded. Groups the elements of a sequence according to a specified key selector function. (Defined by Enumerable.) |
![]() ![]() ![]() | GroupBy<IGrouping<TKey, TElement>, TKey>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | GroupBy<IGrouping<TKey, TElement>, TKey, TElement>(Func<IGrouping<TKey, TElement>, TKey>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | GroupBy<IGrouping<TKey, TElement>, TKey, TResult>(Func<IGrouping<TKey, TElement>, TKey>, Func<TKey, IEnumerable<IGrouping<TKey, 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. (Defined by Enumerable.) |
![]() ![]() ![]() | GroupBy<IGrouping<TKey, TElement>, TKey, TElement>(Func<IGrouping<TKey, TElement>, TKey>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | GroupBy<IGrouping<TKey, TElement>, TKey, TResult>(Func<IGrouping<TKey, TElement>, TKey>, Func<TKey, IEnumerable<IGrouping<TKey, 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. The keys are compared by using a specified comparer. (Defined by Enumerable.) |
![]() ![]() ![]() | GroupBy<IGrouping<TKey, TElement>, TKey, TElement, TResult>(Func<IGrouping<TKey, TElement>, TKey>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | GroupBy<IGrouping<TKey, TElement>, TKey, TElement, TResult>(Func<IGrouping<TKey, TElement>, TKey>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | GroupJoin<IGrouping<TKey, TElement>, TInner, TKey, TResult>(IEnumerable<TInner>, Func<IGrouping<TKey, TElement>, TKey>, Func<TInner, TKey>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | GroupJoin<IGrouping<TKey, TElement>, TInner, TKey, TResult>(IEnumerable<TInner>, Func<IGrouping<TKey, TElement>, TKey>, Func<TInner, TKey>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Intersect<IGrouping<TKey, TElement>>(IEnumerable<IGrouping<TKey, TElement>>) | Overloaded. Produces the set intersection of two sequences by using the default equality comparer to compare values. (Defined by Enumerable.) |
![]() ![]() ![]() | Intersect<IGrouping<TKey, TElement>>(IEnumerable<IGrouping<TKey, TElement>>, IEqualityComparer<IGrouping<TKey, TElement>>) | Overloaded. Produces the set intersection of two sequences by using the specified IEqualityComparer<T> to compare values. (Defined by Enumerable.) |
![]() ![]() ![]() | Join<IGrouping<TKey, TElement>, TInner, TKey, TResult>(IEnumerable<TInner>, Func<IGrouping<TKey, TElement>, TKey>, Func<TInner, TKey>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Join<IGrouping<TKey, TElement>, TInner, TKey, TResult>(IEnumerable<TInner>, Func<IGrouping<TKey, TElement>, TKey>, Func<TInner, TKey>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Last<IGrouping<TKey, TElement>>() | Overloaded. Returns the last element of a sequence. (Defined by Enumerable.) |
![]() ![]() ![]() | Last<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Boolean>) | Overloaded. Returns the last element of a sequence that satisfies a specified condition. (Defined by Enumerable.) |
![]() ![]() ![]() | LastOrDefault<IGrouping<TKey, TElement>>() | Overloaded. Returns the last element of a sequence, or a default value if the sequence contains no elements. (Defined by Enumerable.) |
![]() ![]() ![]() | LastOrDefault<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | LongCount<IGrouping<TKey, TElement>>() | Overloaded. Returns an Int64 that represents the total number of elements in a sequence. (Defined by Enumerable.) |
![]() ![]() ![]() | LongCount<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Boolean>) | Overloaded. Returns an Int64 that represents how many elements in a sequence satisfy a condition. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>>() | Overloaded. Returns the maximum value in a generic sequence. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Nullable<Decimal>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Nullable<Double>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Double value. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Int32>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int32 value. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Nullable<Int32>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int32 value. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Int64>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int64 value. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Nullable<Int64>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int64 value. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Single>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Single value. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Nullable<Single>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Single value. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Double>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Double value. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Decimal>) | Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Decimal value. (Defined by Enumerable.) |
![]() ![]() ![]() | Max<IGrouping<TKey, TElement>, TResult>(Func<IGrouping<TKey, TElement>, TResult>) | Overloaded. Invokes a transform function on each element of a generic sequence and returns the maximum resulting value. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>>() | Overloaded. Returns the minimum value in a generic sequence. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Nullable<Decimal>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Decimal value. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Nullable<Double>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Double value. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Int32>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int32 value. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Nullable<Int32>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int32 value. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Int64>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int64 value. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Nullable<Int64>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int64 value. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Single>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Single value. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Nullable<Single>>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Single value. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Double>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Double value. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Decimal>) | Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Decimal value. (Defined by Enumerable.) |
![]() ![]() ![]() | Min<IGrouping<TKey, TElement>, TResult>(Func<IGrouping<TKey, TElement>, TResult>) | Overloaded. Invokes a transform function on each element of a generic sequence and returns the minimum resulting value. (Defined by Enumerable.) |
![]() ![]() ![]() | OfType<TResult> | Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.) |
![]() ![]() ![]() | OrderBy<IGrouping<TKey, TElement>, TKey>(Func<IGrouping<TKey, TElement>, TKey>) | Overloaded. Sorts the elements of a sequence in ascending order according to a key. (Defined by Enumerable.) |
![]() ![]() ![]() | OrderBy<IGrouping<TKey, TElement>, TKey>(Func<IGrouping<TKey, TElement>, TKey>, IComparer<TKey>) | Overloaded. Sorts the elements of a sequence in ascending order by using a specified comparer. (Defined by Enumerable.) |
![]() ![]() ![]() | OrderByDescending<IGrouping<TKey, TElement>, TKey>(Func<IGrouping<TKey, TElement>, TKey>) | Overloaded. Sorts the elements of a sequence in descending order according to a key. (Defined by Enumerable.) |
![]() ![]() ![]() | OrderByDescending<IGrouping<TKey, TElement>, TKey>(Func<IGrouping<TKey, TElement>, TKey>, IComparer<TKey>) | Overloaded. Sorts the elements of a sequence in descending order by using a specified comparer. (Defined by Enumerable.) |
![]() ![]() ![]() | Reverse<IGrouping<TKey, TElement>> | Inverts the order of the elements in a sequence. (Defined by Enumerable.) |
![]() ![]() ![]() | Select<IGrouping<TKey, TElement>, TResult>(Func<IGrouping<TKey, TElement>, TResult>) | Overloaded. Projects each element of a sequence into a new form. (Defined by Enumerable.) |
![]() ![]() ![]() | Select<IGrouping<TKey, TElement>, TResult>(Func<IGrouping<TKey, TElement>, Int32, TResult>) | Overloaded. Projects each element of a sequence into a new form by incorporating the element's index. (Defined by Enumerable.) |
![]() ![]() ![]() | SelectMany<IGrouping<TKey, TElement>, TResult>(Func<IGrouping<TKey, TElement>, IEnumerable<TResult>>) | Overloaded. Projects each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence. (Defined by Enumerable.) |
![]() ![]() ![]() | SelectMany<IGrouping<TKey, TElement>, TResult>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | SelectMany<IGrouping<TKey, TElement>, TCollection, TResult>(Func<IGrouping<TKey, TElement>, Int32, IEnumerable<TCollection>>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | SelectMany<IGrouping<TKey, TElement>, TCollection, TResult>(Func<IGrouping<TKey, TElement>, IEnumerable<TCollection>>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | SequenceEqual<IGrouping<TKey, TElement>>(IEnumerable<IGrouping<TKey, TElement>>) | Overloaded. Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type. (Defined by Enumerable.) |
![]() ![]() ![]() | SequenceEqual<IGrouping<TKey, TElement>>(IEnumerable<IGrouping<TKey, TElement>>, IEqualityComparer<IGrouping<TKey, TElement>>) | Overloaded. Determines whether two sequences are equal by comparing their elements by using a specified IEqualityComparer<T>. (Defined by Enumerable.) |
![]() ![]() ![]() | Single<IGrouping<TKey, TElement>>() | 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.) |
![]() ![]() ![]() | Single<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | SingleOrDefault<IGrouping<TKey, TElement>>() | 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.) |
![]() ![]() ![]() | SingleOrDefault<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Skip<IGrouping<TKey, TElement>> | Bypasses a specified number of elements in a sequence and then returns the remaining elements. (Defined by Enumerable.) |
![]() ![]() ![]() | SkipWhile<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Boolean>) | Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. (Defined by Enumerable.) |
![]() ![]() ![]() | SkipWhile<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Sum<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Sum<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Sum<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Sum<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Sum<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Sum<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Sum<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Sum<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Sum<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Sum<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Take<IGrouping<TKey, TElement>> | Returns a specified number of contiguous elements from the start of a sequence. (Defined by Enumerable.) |
![]() ![]() ![]() | TakeWhile<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Boolean>) | Overloaded. Returns elements from a sequence as long as a specified condition is true. (Defined by Enumerable.) |
![]() ![]() ![]() | TakeWhile<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | ToArray<IGrouping<TKey, TElement>> | Creates an array from a IEnumerable<T>. (Defined by Enumerable.) |
![]() ![]() ![]() | ToDictionary<IGrouping<TKey, TElement>, TKey>(Func<IGrouping<TKey, TElement>, TKey>) | Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function. (Defined by Enumerable.) |
![]() ![]() ![]() | ToDictionary<IGrouping<TKey, TElement>, TKey>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | ToDictionary<IGrouping<TKey, TElement>, TKey, TElement>(Func<IGrouping<TKey, TElement>, TKey>, Func<IGrouping<TKey, TElement>, TElement>) | Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to specified key selector and element selector functions. (Defined by Enumerable.) |
![]() ![]() ![]() | ToDictionary<IGrouping<TKey, TElement>, TKey, TElement>(Func<IGrouping<TKey, TElement>, TKey>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | ToList<IGrouping<TKey, TElement>> | Creates a List<T> from an IEnumerable<T>. (Defined by Enumerable.) |
![]() ![]() ![]() | ToLookup<IGrouping<TKey, TElement>, TKey>(Func<IGrouping<TKey, TElement>, TKey>) | Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function. (Defined by Enumerable.) |
![]() ![]() ![]() | ToLookup<IGrouping<TKey, TElement>, TKey>(Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | ToLookup<IGrouping<TKey, TElement>, TKey, TElement>(Func<IGrouping<TKey, TElement>, TKey>, Func<IGrouping<TKey, TElement>, TElement>) | Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to specified key selector and element selector functions. (Defined by Enumerable.) |
![]() ![]() ![]() | ToLookup<IGrouping<TKey, TElement>, TKey, TElement>(Func<IGrouping<TKey, TElement>, TKey>, Func<IGrouping<TKey, TElement>, 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.) |
![]() ![]() ![]() | Union<IGrouping<TKey, TElement>>(IEnumerable<IGrouping<TKey, TElement>>) | Overloaded. Produces the set union of two sequences by using the default equality comparer. (Defined by Enumerable.) |
![]() ![]() ![]() | Union<IGrouping<TKey, TElement>>(IEnumerable<IGrouping<TKey, TElement>>, IEqualityComparer<IGrouping<TKey, TElement>>) | Overloaded. Produces the set union of two sequences by using a specified IEqualityComparer<T>. (Defined by Enumerable.) |
![]() ![]() ![]() | Where<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, Boolean>) | Overloaded. Filters a sequence of values based on a predicate. (Defined by Enumerable.) |
![]() ![]() ![]() | Where<IGrouping<TKey, TElement>>(Func<IGrouping<TKey, TElement>, 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.) |
![]() | Zip<IGrouping<TKey, TElement>, TSecond, TResult> | Merges two sequences by using the specified predicate function. (Defined by Enumerable.) |
The type Lookup<TKey, TElement> implements the ILookup<TKey, TElement> interface.
The extension method ToLookup, which can be appended to the end of a LINQ query, returns an object of type ILookup<TKey, TElement>.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
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