Observable.FromAsyncPattern < TResult 方法 (Func < AsyncCallback， Object， IAsyncResult >> ， Func < IAsyncResult， TResult >)

將 Begin/End invoke 函式組轉換成非同步函式。

Namespace：System.Reactive.Linq
裝配： System.Reactive.dll) 中的 System.Reactive (

Syntax

'Declaration
Public Shared Function FromAsyncPattern(Of TResult) ( _
    begin As Func(Of AsyncCallback, Object, IAsyncResult), _
    end As Func(Of IAsyncResult, TResult) _
) As Func(Of IObservable(Of TResult))

'Usage
Dim begin As Func(Of AsyncCallback, Object, IAsyncResult)
Dim end As Func(Of IAsyncResult, TResult)
Dim returnValue As Func(Of IObservable(Of TResult))

returnValue = Observable.FromAsyncPattern(begin, _
    end)

public static Func<IObservable<TResult>> FromAsyncPattern<TResult>(
    Func<AsyncCallback, Object, IAsyncResult> begin,
    Func<IAsyncResult, TResult> end
)

public:
generic<typename TResult>
static Func<IObservable<TResult>^>^ FromAsyncPattern(
    Func<AsyncCallback^, Object^, IAsyncResult^>^ begin, 
    Func<IAsyncResult^, TResult>^ end
)

static member FromAsyncPattern : 
        begin:Func<AsyncCallback, Object, IAsyncResult> * 
        end:Func<IAsyncResult, 'TResult> -> Func<IObservable<'TResult>> 

JScript does not support generic types and methods.

類型參數

• TResult
  結果的類型。

參數

• begin
  類型：System.Func<AsyncCallback、Object、IAsyncResult>
  begin invoke 函式。

• end
  類型：System.Func<IAsyncResult、TResult>
  結束叫用函式。

傳回值

類型：System.Func<IObservable< TResult>>
Begin/End invoke 函式配對。

另請參閱

參考

Observable 類別

FromAsyncPattern 多載

System.Reactive.Linq 命名空間