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

將 Begin/End invoke 函式配對轉換成非同步函式。

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

語法

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

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

returnValue = Observable.FromAsyncPattern(begin, _
    end)

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

public:
static Func<IObservable<Unit>^>^ FromAsyncPattern(
    Func<AsyncCallback^, Object^, IAsyncResult^>^ begin, 
    Action<IAsyncResult^>^ end
)

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

public static function FromAsyncPattern(
    begin : Func<AsyncCallback, Object, IAsyncResult>, 
    end : Action<IAsyncResult>
) : Func<IObservable<Unit>>

參數

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

• end
  類型：System.Action<IAsyncResult>
  結束叫用函式。

傳回值

類型：System.Func<IObservable<單位>>
Begin/End invoke 函式組。

另請參閱

參考

Observable 類別

FromAsyncPattern 多載

System.Reactive.Linq 命名空間