Qbservable.FromAsyncPattern 方法 (IQbservableProvider、Expression<Func<AsyncCallback、Object、IAsyncResult>>、Expression<Action<IAsyncResult>>)

2011-06-28

将 Begin/End 调用函数对转换为异步函数。

Namespace：System.Reactive.Linq
装配： System.Reactive.Providers.dll) 中的 System.Reactive.Providers (

语法

'Declaration
<ExtensionAttribute> _
Public Shared Function FromAsyncPattern ( _
    provider As IQbservableProvider, _
    begin As Expression(Of Func(Of AsyncCallback, Object, IAsyncResult)), _
    end As Expression(Of Action(Of IAsyncResult)) _
) As Func(Of IQbservable(Of Unit))

'Usage
Dim provider As IQbservableProvider
Dim begin As Expression(Of Func(Of AsyncCallback, Object, IAsyncResult))
Dim end As Expression(Of Action(Of IAsyncResult))
Dim returnValue As Func(Of IQbservable(Of Unit))

returnValue = provider.FromAsyncPattern(begin, _
    end)

public static Func<IQbservable<Unit>> FromAsyncPattern(
    this IQbservableProvider provider,
    Expression<Func<AsyncCallback, Object, IAsyncResult>> begin,
    Expression<Action<IAsyncResult>> end
)

[ExtensionAttribute]
public:
static Func<IQbservable<Unit>^>^ FromAsyncPattern(
    IQbservableProvider^ provider, 
    Expression<Func<AsyncCallback^, Object^, IAsyncResult^>^>^ begin, 
    Expression<Action<IAsyncResult^>^>^ end
)

static member FromAsyncPattern : 
        provider:IQbservableProvider * 
        begin:Expression<Func<AsyncCallback, Object, IAsyncResult>> * 
        end:Expression<Action<IAsyncResult>> -> Func<IQbservable<Unit>>

public static function FromAsyncPattern(
    provider : IQbservableProvider, 
    begin : Expression<Func<AsyncCallback, Object, IAsyncResult>>, 
    end : Expression<Action<IAsyncResult>>
) : Func<IQbservable<Unit>>