Enumerable.SelectMany Method

July 28, 2014

Projects each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence.

This member is overloaded. For complete information about this member, including syntax, usage, and examples, click a name in the overload list.

  NameDescription
Public method Static member SelectMany<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 method Static member SelectMany<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 method Static member SelectMany<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 method Static member SelectMany<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.
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