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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)


<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)
public static IObservable<TOther> SelectMany<TSource, TOther>(
    this IObservable<TSource> source,
    IObservable<TOther> other
generic<typename TSource, typename TOther>
static IObservable<TOther>^ SelectMany(
    IObservable<TSource>^ source, 
    IObservable<TOther>^ other
static member SelectMany : 
        source:IObservable<'TSource> * 
        other:IObservable<'TOther> -> IObservable<'TOther> 
JScript does not support generic types and methods.

Type Parameters

  • TSource
    The type of source.
  • TOther
    The other type.


  • other
    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 or .

See Also


Observable Class

SelectMany Overload

System.Reactive.Linq Namespace