Observable.SelectMany<TSource, TOther> Method (IObservable<TSource>, IObservable<TOther>)

Projects each element of an observable sequence to an observable sequence and flattens the resulting observable sequences into one observable sequence.

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

public static IObservable<TOther> SelectMany<TSource, TOther>(
	this IObservable<TSource> source,
	IObservable<TOther> other

Type Parameters


The type of source.


The other type.


Type: System.IObservable<TSource>
An observable sequence of elements to project.
Type: System.IObservable<TOther>
An observable sequence to project each element from the source sequence onto.

Return Value

Type: System.IObservable<TOther>
An observable sequence whose elements are the result of projecting each source element onto the other sequence and merging all the resulting sequences together.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see https://msdn.microsoft.com/en-us/library/bb384936(v=vs.103).aspx or https://msdn.microsoft.com/en-us/library/bb383977(v=vs.103).aspx.