Question

Find controls in a userControl that is in a masterPage

Asked by: ruffone

I have a userControl with a treeView in a masterPage. I need information from the selected node of the treeView in the under lying page. How do I find the treeView in the userControl that is in the masterPage while I am in the page.

Thanks

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Asked On
2007-11-08 at 16:57:52ID22949182
Tags

control

,

treeview

,

from

,

page

Topics

Visual Studio

,

Microsoft Visual Basic.Net

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Answers

 

by: needo_jeePosted on 2007-11-08 at 19:40:10ID: 20247422

This is working code...
I have written it in load event of master page.
but remember .. you will not be able to find nodes of tree on first time page load.

TreeView tv = ((TreeView)((WebUserControl)this.FindControl("WebUserControl1")).FindControl("TreeView1"));

because .. if you have populated your treeview in load event of any content page or usercontrol .. then according to event model of master pages.. the master page load event occures first and the "Content controls Load event " after that...

for details kindly check this link

http://blogs.msdn.com/peterty/archive/2006/03/21/ASP.NET-2.0-Master-Pages-and-Content-Pages-event-sequence.aspx
**************************************
if you are populating treeview in load event of your user control then
you cant do this in master page load event
 TreeView tv = ((TreeView)((WebUserControl)this.FindControl("WebUserControl1")).FindControl("TreeView1"));
Response.Write(tv.Nodes[0].Text);

you can do like this

if(isPostBack)
{
 TreeView tv = ((TreeView)((WebUserControl)this.FindControl("WebUserControl1")).FindControl("TreeView1"));
Response.Write(tv.Nodes[0].Text);
}

thanks

 

by: ruffonePosted on 2007-11-09 at 09:23:30ID: 20251165

I found it with this.
Dim tv As TreeView = CType(CType(Page.Master.FindControl("WebUserControl1"), UserControl).FindControl("TreeView1"), TreeView)
Now if I could only figure out why it wont stay selected I would be golden.

Thanks for your help.

 

by: needo_jeePosted on 2007-11-09 at 13:49:29ID: 20253418

hey .. thats not difficult .. here is the way
Dim tv As TreeView = CType(CType(Page.Master.FindControl("WebUserControl1"), UserControl).FindControl("TreeView1"), TreeView)
dim td as TreeNode = tv.SelectedNode;

now you can get all properties of selected treenode.
further if you have any prob .. please feel free to ask
thanks

20120131-EE-VQP-002

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