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Observable.FromEventPattern(Of TDelegate, TEventArgs) Method (Func(Of EventHandler(Of TEventArgs), TDelegate), Action(Of TDelegate), Action(Of TDelegate))

Converts a .NET event, conforming to the standard .NET event pattern, to an observable sequence with the specified conversion, add handler and remove handler.

Namespace:  System.Reactive.Linq
Assembly:  System.Reactive (in System.Reactive.dll)

'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)

Type Parameters

TDelegate

The type of delegate.

TEventArgs

The type of event.

Parameters

conversion
Type: System.Func(Of EventHandler(Of TEventArgs), TDelegate)
A function used to convert the given event handler to a delegate compatible with the underlying .NET event.
addHandler
Type: System.Action(Of TDelegate)
The action that attaches the given event handler to the underlying .NET event.
removeHandler
Type: System.Action(Of TDelegate)
The action that detaches the given event handler from the underlying .NET event.

Return Value

Type: System.IObservable(Of EventPattern(Of TEventArgs))
The observable sequence that contains data representations of invocations of the underlying .NET event.
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