Relating to a control within the active MDI child form 1

[james0264]

My program consists of a MDI Parent which needs to relate to the active child form. How do I achieve this, if I want to use the .GoBack() function on a web browser within the child if I click on a tool bar button in the parrent form. All I know how to use is Me.ActiveMdiChild. but it fails to work when I use Me.ActiveMdiChild.brwBrowser. statement. Many thanks, James.

 

[TipGiver]

You propably need this:


Dim f As Form = Me.ActiveMdiChild
CType(f.Controls("WebBrowser1"), WebBrowser).Navigate("

http://www.tek-tips.com")

 

[james0264]

I have been gob-smacked! Thank you TipGiver for giving this piece of code, here's a star!

 

[james0264]

I've have just changed all my code which needs to refer to the active MDI child to the code provided. But now I need to find a way of updating a control on the parent form from the active mdi child. Based on the code above, I have the following:

Dim frmParentForm As Form = Me.ParentForm
CType(frmParentForm.Controls("staStripProgress"), ToolStripProgressBar).Value = 0

This however gives me an error that "Value of type 'System.Windows.Forms.Control' cannot be converted to 'System.Windows.Forms.ToolStripProgressBar'." Any help? Many thanks in advance, James.

 

[TipGiver]

Hello!

Here is a way to do that:
* form1 is the mdi parent form

In form1 write:

    Public Property pbarValue() As Integer
        Get
            Return ToolStripProgressBar1.Value
        End Get
        Set(ByVal value As Integer)
            ToolStripProgressBar1.Value = value
        End Set
    End Property

Somewhere in the child form:

        Dim pf As Form = Me.MdiParent
        DirectCast(pf, Form1).pbarValue = 50

* NOTE that i do the directcast because i know that the mdi parent is form1.

----------
There is a similar way (to my preview post) to do that too. I think it is better to do that by a property.

 

[james0264]

Yet again, many thanks!