trigger an event in a parent thread

Is there a way to trigger an event in a parent thread while the child thread is still running?


I can call a method when the child thread finishes using the asynch callback, but not while its running.


Here is my attempt so far: (which is not working)


    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Dim objmyAsynch As New my_asynch

        Dim mi As New MethodInvoker(AddressOf objmyAsynch.my_asynch_sub)
        mi.BeginInvoke(AddressOf mycallback_sub, Nothing)
    End Sub

    Public Sub mycallback_sub(ByVal ar As IAsyncResult)
        Console.WriteLine("here")
        Console.WriteLine(ar.AsyncState)
    End Sub

    Public Class my_asynch
        Public Event myEvent()

        Public Sub my_asynch_sub()
            Console.WriteLine("second thread going just fine")
            RaiseEvent myEvent()
        End Sub

    End Class