Hello All,

I have a TreeView on my master page. It has two levels. The level one has expand/collapse option. When I expand and collapse any node at level 1, I want to preserve that state across my pages. I am referring to the article at http://msdn.microsoft.com/en-us/magazine/cc163598.aspx

Now the problem is in last peice where they say to keep the TreeView in a UpdatePanel. Can anybody have some better solution. Once again let me tell you what I want to do -

"I have a treeview on master page. It has 2 levels, with expand collapse on level 1 nodes. If a user expand and collapse the nodes, I need to preserve that state to other pages also"

Thank You,

Shail

Hi,

ShailAtlas:

Now the problem is in last peice where they say to keep the TreeView in a UpdatePanel. Can anybody have some better solution. Once again let me tell you what I want to do -

I am not sure you can implement it in the UpdatePanel, that's because there are some compatible problems with the UpdatePanel Controls, you can refer the part of Controls that Are Not Compatible with UpdatePanel Controls  of this link: http://www.asp.net/ajax/documentation/live/overview/UpdatePanelOverview.aspx.

About how to maintain the treeview state across your site in a master page, you can refer this thread:  http://forums.asp.net/p/1022893/1387445.aspx 

hi friend

add this in pageload event

 protected void Page_Load(object sender, EventArgs e)
    {
        TreeView1.CollapseAll();

        if (TreeView1.SelectedNode != null && TreeView1.SelectedNode.Parent != null)
        {
            TreeView1.SelectedNode.Parent.Expand();
        }
    }

 //////////////////////////////////////////////////////////////////////////////////////////

Hope this will help you

Dont forget to mark as answer if this helps you