Skip to content

,System.IObservable{--1})} ,System.Func{--0,System.IObservable{--1}})} ,System.Func{--0,System.Int32,System.IObservable{--1}})} ,System.Func{--0,System.Threading.Tasks.Task{--1}})} ,System.Func{--0,System.Int32,System.Threading.Tasks.Task{--1}})} ,System.Func{--0,System.Threading.CancellationToken,System.Threading.Tasks.Task{--1}})} ,System.Func{--0,System.Int32,System.Threading.CancellationToken,System.Threading.Tasks.Task{--1}})} ,System.Func{--0,System.IObservable{--1}},System.Func{--0,--1,--2})} ,System.Func{--0,System.Int32,System.IObservable{--1}},System.Func{--0,System.Int32,--1,System.Int32,--2})} ,System.Func{--0,System.Threading.Tasks.Task{--1}},System.Func{--0,--1,--2})} ,System.Func{--0,System.Int32,System.Threading.Tasks.Task{--1}},System.Func{--0,System.Int32,--1,--2})} ,System.Func{--0,System.Threading.CancellationToken,System.Threading.Tasks.Task{--1}},System.Func{--0,--1,--2})} ,System.Func{--0,System.Int32,System.Threading.CancellationToken,System.Threading.Tasks.Task{--1}},System.Func{--0,System.Int32,--1,--2})} ,System.Func{--0,System.IObservable{--1}},System.Func{System.Exception,System.IObservable{--1}},System.Func{System.IObservable{--1}})} ,System.Func{--0,System.Int32,System.IObservable{--1}},System.Func{System.Exception,System.IObservable{--1}},System.Func{System.IObservable{--1}})} ,System.Func{--0,System.Collections.Generic.IEnumerable{--1}})} ,System.Func{--0,System.Int32,System.Collections.Generic.IEnumerable{--1}})} ,System.Func{--0,System.Collections.Generic.IEnumerable{--1}},System.Func{--0,--1,--2})} ,System.Func{--0,System.Int32,System.Collections.Generic.IEnumerable{--1}},System.Func{--0,System.Int32,--1,System.Int32,--2})}

Observable.SelectMany(IObservable, IObservable) method

Defined in

Type: Observable Namespace: System.Reactive.Linq Assembly: System.Reactive.dll

Applies to

net8.0, net8.0-windows10.0.19041, net8.0-ios17.5, net8.0-maccatalyst17.5, net8.0-macos14.2, net8.0-macos14.5, net8.0-tvos17.2, netstandard2.0

Overloads

  • 1. public static IObservable<TOther> SelectMany<TSource, TOther>(this IObservable<TSource> source, IObservable<TOther> other)
  • 2. public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, IObservable<TResult>> selector)
  • 3. public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, int, IObservable<TResult>> selector)
  • 4. public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, Task<TResult>> selector)
  • 5. public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, int, Task<TResult>> selector)
  • 6. public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, CancellationToken, Task<TResult>> selector)
  • 7. public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, int, CancellationToken, Task<TResult>> selector)
  • 8. public static IObservable<TResult> SelectMany<TSource, TCollection, TResult>(this IObservable<TSource> source, Func<TSource, IObservable<TCollection>> collectionSelector, Func<TSource, TCollection, TResult> resultSelector)
  • 9. public static IObservable<TResult> SelectMany<TSource, TCollection, TResult>(this IObservable<TSource> source, Func<TSource, int, IObservable<TCollection>> collectionSelector, Func<TSource, int, TCollection, int, TResult> resultSelector)
  • 10. public static IObservable<TResult> SelectMany<TSource, TTaskResult, TResult>(this IObservable<TSource> source, Func<TSource, Task<TTaskResult>> taskSelector, Func<TSource, TTaskResult, TResult> resultSelector)
  • 11. public static IObservable<TResult> SelectMany<TSource, TTaskResult, TResult>(this IObservable<TSource> source, Func<TSource, int, Task<TTaskResult>> taskSelector, Func<TSource, int, TTaskResult, TResult> resultSelector)
  • 12. public static IObservable<TResult> SelectMany<TSource, TTaskResult, TResult>(this IObservable<TSource> source, Func<TSource, CancellationToken, Task<TTaskResult>> taskSelector, Func<TSource, TTaskResult, TResult> resultSelector)
  • 13. public static IObservable<TResult> SelectMany<TSource, TTaskResult, TResult>(this IObservable<TSource> source, Func<TSource, int, CancellationToken, Task<TTaskResult>> taskSelector, Func<TSource, int, TTaskResult, TResult> resultSelector)
  • 14. public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, IObservable<TResult>> onNext, Func<Exception, IObservable<TResult>> onError, Func<IObservable<TResult>> onCompleted)
  • 15. public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, int, IObservable<TResult>> onNext, Func<Exception, IObservable<TResult>> onError, Func<IObservable<TResult>> onCompleted)
  • 16. public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, IEnumerable<TResult>> selector)
  • 17. public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, int, IEnumerable<TResult>> selector)
  • 18. public static IObservable<TResult> SelectMany<TSource, TCollection, TResult>(this IObservable<TSource> source, Func<TSource, IEnumerable<TCollection>> collectionSelector, Func<TSource, TCollection, TResult> resultSelector)
  • 19. public static IObservable<TResult> SelectMany<TSource, TCollection, TResult>(this IObservable<TSource> source, Func<TSource, int, IEnumerable<TCollection>> collectionSelector, Func<TSource, int, TCollection, int, TResult> resultSelector)

1. Overload

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

Type parameters

NameDescription
TSource--
TOther--

Parameters

NameTypeDescription
sourceIObservable--
otherIObservable--

Returns: IObservable

2. Overload

public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, IObservable<TResult>> selector)

Type parameters

NameDescription
TSource--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
selectorFunc>--

Returns: IObservable

3. Overload

public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, int, IObservable<TResult>> selector)

Type parameters

NameDescription
TSource--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
selectorFunc>--

Returns: IObservable

4. Overload

public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, Task<TResult>> selector)

Type parameters

NameDescription
TSource--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
selectorFunc>--

Returns: IObservable

5. Overload

public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, int, Task<TResult>> selector)

Type parameters

NameDescription
TSource--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
selectorFunc>--

Returns: IObservable

6. Overload

public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, CancellationToken, Task<TResult>> selector)

Type parameters

NameDescription
TSource--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
selectorFunc>--

Returns: IObservable

7. Overload

public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, int, CancellationToken, Task<TResult>> selector)

Type parameters

NameDescription
TSource--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
selectorFunc>--

Returns: IObservable

8. Overload

public static IObservable<TResult> SelectMany<TSource, TCollection, TResult>(this IObservable<TSource> source, Func<TSource, IObservable<TCollection>> collectionSelector, Func<TSource, TCollection, TResult> resultSelector)

Type parameters

NameDescription
TSource--
TCollection--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
collectionSelectorFunc>--
resultSelectorFunc--

Returns: IObservable

9. Overload

public static IObservable<TResult> SelectMany<TSource, TCollection, TResult>(this IObservable<TSource> source, Func<TSource, int, IObservable<TCollection>> collectionSelector, Func<TSource, int, TCollection, int, TResult> resultSelector)

Type parameters

NameDescription
TSource--
TCollection--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
collectionSelectorFunc>--
resultSelectorFunc--

Returns: IObservable

10. Overload

public static IObservable<TResult> SelectMany<TSource, TTaskResult, TResult>(this IObservable<TSource> source, Func<TSource, Task<TTaskResult>> taskSelector, Func<TSource, TTaskResult, TResult> resultSelector)

Type parameters

NameDescription
TSource--
TTaskResult--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
taskSelectorFunc>--
resultSelectorFunc--

Returns: IObservable

11. Overload

public static IObservable<TResult> SelectMany<TSource, TTaskResult, TResult>(this IObservable<TSource> source, Func<TSource, int, Task<TTaskResult>> taskSelector, Func<TSource, int, TTaskResult, TResult> resultSelector)

Type parameters

NameDescription
TSource--
TTaskResult--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
taskSelectorFunc>--
resultSelectorFunc--

Returns: IObservable

12. Overload

public static IObservable<TResult> SelectMany<TSource, TTaskResult, TResult>(this IObservable<TSource> source, Func<TSource, CancellationToken, Task<TTaskResult>> taskSelector, Func<TSource, TTaskResult, TResult> resultSelector)

Type parameters

NameDescription
TSource--
TTaskResult--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
taskSelectorFunc>--
resultSelectorFunc--

Returns: IObservable

13. Overload

public static IObservable<TResult> SelectMany<TSource, TTaskResult, TResult>(this IObservable<TSource> source, Func<TSource, int, CancellationToken, Task<TTaskResult>> taskSelector, Func<TSource, int, TTaskResult, TResult> resultSelector)

Type parameters

NameDescription
TSource--
TTaskResult--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
taskSelectorFunc>--
resultSelectorFunc--

Returns: IObservable

14. Overload

public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, IObservable<TResult>> onNext, Func<Exception, IObservable<TResult>> onError, Func<IObservable<TResult>> onCompleted)

Type parameters

NameDescription
TSource--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
onNextFunc>--
onErrorFunc>--
onCompletedFunc>--

Returns: IObservable

15. Overload

public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, int, IObservable<TResult>> onNext, Func<Exception, IObservable<TResult>> onError, Func<IObservable<TResult>> onCompleted)

Type parameters

NameDescription
TSource--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
onNextFunc>--
onErrorFunc>--
onCompletedFunc>--

Returns: IObservable

16. Overload

public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, IEnumerable<TResult>> selector)

Type parameters

NameDescription
TSource--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
selectorFunc>--

Returns: IObservable

17. Overload

public static IObservable<TResult> SelectMany<TSource, TResult>(this IObservable<TSource> source, Func<TSource, int, IEnumerable<TResult>> selector)

Type parameters

NameDescription
TSource--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
selectorFunc>--

Returns: IObservable

18. Overload

public static IObservable<TResult> SelectMany<TSource, TCollection, TResult>(this IObservable<TSource> source, Func<TSource, IEnumerable<TCollection>> collectionSelector, Func<TSource, TCollection, TResult> resultSelector)

Type parameters

NameDescription
TSource--
TCollection--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
collectionSelectorFunc>--
resultSelectorFunc--

Returns: IObservable

19. Overload

public static IObservable<TResult> SelectMany<TSource, TCollection, TResult>(this IObservable<TSource> source, Func<TSource, int, IEnumerable<TCollection>> collectionSelector, Func<TSource, int, TCollection, int, TResult> resultSelector)

Type parameters

NameDescription
TSource--
TCollection--
TResult--

Parameters

NameTypeDescription
sourceIObservable--
collectionSelectorFunc>--
resultSelectorFunc--

Returns: IObservable