Migrating Multi-Form vb6

[bobba buoy]

I wrote a simple vb6 app to get the feel of .Net structure. I all works fine except I can't change forms. It migrated with no errors/warnings but when I select the button that Unloads one form and loads the other, the second form loads very briefly and then the app ends. Any help? It worked fine in vb6.

 

[reboot]

It worked fine in vb6.

Famous last words. Vb.Net is very different. Show us the code.

 

[bobba buoy]

Funny you should mention that. I had that very thought as I typed it.

Here is the code behind the forms

   Private Sub Command1_Click(ByVal eventSender As 
         System.Object, ByVal eventArgs As System.EventArgs) 
        Handles Command1.Click
        Dim strYesNo As String
        strYesNo = CStr(MsgBox("Are you sure?", MsgBoxStyle.YesNo, "Confirm"))
        If strYesNo = CStr(MsgBoxResult.Yes) Then
            End
        End If
    End Sub

    Private Sub Command2_Click(ByVal eventSender As     
               System.Object, ByVal eventArgs As System.EventArgs) 
              Handles Command2.Click
        Me.Close()
        Form2.DefInstance.Show()
    End Sub

And here is the code behind the module

Module Module1
    Public Sub Main_Renamed()
        Form1.DefInstance.Show()
    End Sub
End Module

 

[bobba buoy]

I think I answered my own question. If you unload the form the start-up form/module in .Net the program terminates? When I change Me.Close to Me.Hide, it works fine. FYI. And if I'm wrong on this, please tell me.

 

[Derek Stone]

You are correct. Once you close the application's main window the message pump stops, effectively closing the program.

 

[divil]

If you don't want your application to rely on one "main window" you can always start a message pump off using Application.Run() (note you're not passing a form) and then use Application.Exit() to finish that message pump when you're done.

 

[bobba buoy]

Thanks! So terminating the project would use Application.Exit() ?

 

[Derek Stone]

That's what he said.