将 Begin/End 调用函数对转换为异步函数。
Namespace：System.Reactive.Linq
装配： System.Reactive.dll) 中的 System.Reactive (
语法
'Declaration
Public Shared Function FromAsyncPattern(Of T1, T2, T3, T4, TResult) ( _
begin As Func(Of T1, T2, T3, T4, AsyncCallback, Object, IAsyncResult), _
end As Func(Of IAsyncResult, TResult) _
) As Func(Of T1, T2, T3, T4, IObservable(Of TResult))
'Usage
Dim begin As Func(Of T1, T2, T3, T4, AsyncCallback, Object, IAsyncResult)
Dim end As Func(Of IAsyncResult, TResult)
Dim returnValue As Func(Of T1, T2, T3, T4, IObservable(Of TResult))
returnValue = Observable.FromAsyncPattern(begin, _
end)
public static Func<T1, T2, T3, T4, IObservable<TResult>> FromAsyncPattern<T1, T2, T3, T4, TResult>(
Func<T1, T2, T3, T4, AsyncCallback, Object, IAsyncResult> begin,
Func<IAsyncResult, TResult> end
)
public:
generic<typename T1, typename T2, typename T3, typename T4, typename TResult>
static Func<T1, T2, T3, T4, IObservable<TResult>^>^ FromAsyncPattern(
Func<T1, T2, T3, T4, AsyncCallback^, Object^, IAsyncResult^>^ begin,
Func<IAsyncResult^, TResult>^ end
)
static member FromAsyncPattern :
begin:Func<'T1, 'T2, 'T3, 'T4, AsyncCallback, Object, IAsyncResult> *
end:Func<IAsyncResult, 'TResult> -> Func<'T1, 'T2, 'T3, 'T4, IObservable<'TResult>>
JScript does not support generic types and methods.
类型参数
- T1
第一种类型的函数。
- T2
第二种类型的函数。
- T3
第三种类型的函数。
- T4
第四种类型的函数。
- TResult
结果的类型。
parameters
- begin
类型： System.Func<T1、T2、T3、T4、 AsyncCallback、 Object、 IAsyncResult>
begin 调用函数。
- end
类型： System.Func<IAsyncResult、TResult>
end invoke 函数。
返回值
类型： System.Func<T1、T2、T3、T4、 IObservable<TResult>>
开始/结束调用函数对。