Instrução RemoveHandler

Removes the association between an event and an event handler.

RemoveHandler event, AddressOf eventhandler

Parts

Term	Definition
event	The name of the event being handled.
eventhandler	The name of the procedure currently handling the event.

Comentários

The AddHandler and RemoveHandler statements allow you to start and stop event handling for a specific event at any time during program execution.

Observação
For custom events, the RemoveHandler statement invokes the event's RemoveHandler accessor. For more information on custom events, see Declaração de evento.

Exemplo

Sub TestEvents()
    Dim Obj As New Class1
    ' Associate an event handler with an event.
    AddHandler Obj.Ev_Event, AddressOf EventHandler
    ' Call the method to raise the event.
    Obj.CauseSomeEvent()
    ' Stop handling events.
    RemoveHandler Obj.Ev_Event, AddressOf EventHandler
    ' This event will not be handled.
    Obj.CauseSomeEvent()
End Sub

Sub EventHandler()
    ' Handle the event.
    MsgBox("EventHandler caught event.")
End Sub

Public Class Class1
    ' Declare an event.
    Public Event Ev_Event()
    Sub CauseSomeEvent()
        ' Raise an event.
        RaiseEvent Ev_Event()
    End Sub
End Class

Consulte também

Referência

Instrução AddHandler

Cláusula Handles (Visual Basic)

Declaração de evento

Outros recursos

Eventos (Visual Basic)