I'm not 100% sure what you're trying to do Alex, because I'm having trouble following your examples there, but I'm thinking that maybe using interfaces might help? Take a look at my blog post about passing data between forms and see if gives you any ideas:

http://geek-goddess-bonnie.blogspot.com/2011/01/passing-data-between-forms.html

~~Bonnie




>Hi all,
> I use vb.net , mdi form. I want to pass the value to previous form mean ItemPrint.txtcdesc.Text ="aaa"
>My case MainForm is menu, on click will go to Itemmas, click the print button to itemprint page, after click the button to
>SelectForm. If click the Ok button , ItemPrint.txtcdesc.Text ="aaa"
> But it is empty in this time, how can i do? Thank you all~~~
>
>MainForm
>
>

>    Sub FunctionMenu_Click(ByVal sender As Object, ByVal e As System.EventArgs)
>        Dim ThisMenu As ToolStripMenuItem = CType(sender, ToolStripMenuItem)
>       Dim sonForm As Form
>       sonForm = _
>        CType(Activator.CreateInstance(System.Reflection.Assembly.GetExecutingAssembly.GetType("WTS." & ThisMenu.Name.ToUpper)), Form)
>
>                    sonForm.MdiParent = Me
>                    sonForm.Show()
>          End Sub
>

>
>Itemmas
>
>

>       Private Sub ToolStripPrint_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripPrint.Click
>        Dim ItemPrint As Form
>        ItemPrint = New ItemPrint()
>        ItemPrint.Show()
>    End Sub
>

>
>Itemprint
>
>

>      Private Sub FinderItmtype_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FinderItmtype.Click
>         txtcdesc.text =""
>          SelectForm.Show()
>    End Sub
>

>
>SelectForm
>
>

>   Private Sub btnOk_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOk.Click
>                ItemPrint.txtcdesc.Text ="aaa"
>    End Sub
>