Treeview selected Node

[Vikram]

Hi,

I am using Asp.net 2.0 treeview control.Tree is having 2-3 level of
hirearechy. I want to show current selected node as expanded when the page
reloads or postback. How can I do that?

Thanks

 

[Antoine Griffard]

Hi,

Try this :
protected void tv_PreRender(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
if (tv.SelectedNode != null)
tv.SelectedNode.Expand();
}
}

Tonio - MVP,
http://www.wygwam.com
http://blogs.developpeur.org/tonio

 

[Ladislav Mrnka]

Hi Vikram,

try to set SelectAction in your nodes to Expand. Be aware of impact on
TreeView functionality. Changing SelectAction can affect which events are
fired when user click on node. For expand mode it will not fire
SelectedNodeChanged any more.

You can also handle SelectedNodeChanged, collapse all nodes and then expand
only selected node if you want to.

Regards,
Ladislav