Observable.SelectMany(Of TSource, TOther) Method (IObservable(Of TSource), IObservable(Of 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)

<ExtensionAttribute> _
Public Shared Function SelectMany(Of TSource, TOther) ( _
	source As IObservable(Of TSource), _
	other As IObservable(Of TOther) _
) As IObservable(Of TOther)
Dim source As IObservable(Of TSource)
Dim other As IObservable(Of TOther)
Dim returnValue As IObservable(Of TOther)

returnValue = source.SelectMany(other)

Type Parameters


The type of source.


The other type.


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

Return Value

Type: System.IObservable(Of 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(Of 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.aspx or https://msdn.microsoft.com/en-us/library/bb383977.aspx.