Topic: Why I can't remove the handler??

[guohq]

''autocad 2008

Public Class Class1
    Dim db As Autodesk.AutoCAD.DatabaseServices.Database = Autodesk.AutoCAD.DatabaseServices.HostApplicationServices.WorkingDatabase

    Sub delent(ByVal sender As Object, ByVal e As Autodesk.AutoCAD.DatabaseServices.ObjectErasedEventArgs)
        MsgBox("del")
    End Sub

    <Autodesk.AutoCAD.Runtime.CommandMethod("d1")> _
    Sub aa()
        AddHandler db.ObjectErased, AddressOf delent

    End Sub

    <Autodesk.AutoCAD.Runtime.CommandMethod("d2")> _
    Sub bb()
        RemoveHandler db.ObjectErased, AddressOf delent

    End Sub
End Class

[bikelink]

Does the document  exists when You try to deregister the event ?
what kind of error is showed ?

[guohq]

there is no error when I deregister the event .

[bikelink]

how many times do you call register ? just one ?
Maybe you have registered many times the delegate..and just one deregistration isn't enough.


try to post all your code..  or is that all?