Observable.FromEventPattern < TDelegate， TEventArgs > 方法 (Func < EventHandler < TEventArgs > ， TDelegate > ， Action TDelegate， Action << TDelegate >>)
將符合標準 .NET 事件模式的 .NET 事件轉換為具有指定轉換的可觀察序列、新增處理常式和移除處理常式。
Namespace：System.Reactive.Linq
裝配： System.Reactive.dll) 中的 System.Reactive (
Syntax
'Declaration
Public Shared Function FromEventPattern(Of TDelegate, TEventArgs As EventArgs) ( _
conversion As Func(Of EventHandler(Of TEventArgs), TDelegate), _
addHandler As Action(Of TDelegate), _
removeHandler As Action(Of TDelegate) _
) As IObservable(Of EventPattern(Of TEventArgs))
'Usage
Dim conversion As Func(Of EventHandler(Of TEventArgs), TDelegate)
Dim addHandler As Action(Of TDelegate)
Dim removeHandler As Action(Of TDelegate)
Dim returnValue As IObservable(Of EventPattern(Of TEventArgs))
returnValue = Observable.FromEventPattern(conversion, _
addHandler, removeHandler)
public static IObservable<EventPattern<TEventArgs>> FromEventPattern<TDelegate, TEventArgs>(
Func<EventHandler<TEventArgs>, TDelegate> conversion,
Action<TDelegate> addHandler,
Action<TDelegate> removeHandler
)
where TEventArgs : EventArgs
public:
generic<typename TDelegate, typename TEventArgs>
where TEventArgs : EventArgs
static IObservable<EventPattern<TEventArgs>^>^ FromEventPattern(
Func<EventHandler<TEventArgs>^, TDelegate>^ conversion,
Action<TDelegate>^ addHandler,
Action<TDelegate>^ removeHandler
)
static member FromEventPattern :
conversion:Func<EventHandler<'TEventArgs>, 'TDelegate> *
addHandler:Action<'TDelegate> *
removeHandler:Action<'TDelegate> -> IObservable<EventPattern<'TEventArgs>> when 'TEventArgs : EventArgs
JScript does not support generic types and methods.
類型參數
- TDelegate
委派的類型。
- TEventArgs
事件的類型。
參數
- 轉換
類型：System.Func<EventHandler< TEventArgs > 、TDelegate>
函式，用來將指定的事件處理常式轉換為與基礎 .NET 事件相容的委派。
- addHandler
類型：System.Action< TDelegate>
將指定事件處理常式附加至基礎 .NET 事件的動作。
- removeHandler
類型：System.Action< TDelegate>
將指定事件處理常式與基礎 .NET 事件中斷連結的動作。
傳回值
類型：System.IObservable<EventPattern< TEventArgs>>
可觀察序列，其中包含基礎 .NET 事件調用的資料表示。