It doesn't work. I tried both ExpandAncestors and Expanded = true in the NodeClick event and in PreRender and the tree always return back to its initial state. Even if it worked, it is not enough because a user can click on any page link to get to another page or write down the url himself, and you won't get any event.

I added this in the DataBound event and it worked:

var url = Page.Request.Url.AbsolutePath;

            foreach (DataTreeNode node in AllNodes)

            {

                if (node.NavigateUrl == url)

                {

                    node.Expanded = true;

                    node.ExpandAnscestors();

                }

            }

By the way, tree.AllNodes is an ArrayList. Is there a reason it is not List<DataTreeNode>?

As far as I know, this control wasn't even exist in the 1.1 framework.

Version 10.1, fix 2039, VS 2010, .NET 4.

Hi Amiram,

Does the above code work for the Webdatatree control having the Infragistics v13.1? If not can you provide a snippet of code that works for the current version of Webdatatree control.

Regards

Shinoy

Thanks Amiram.  Your code worked well.  Here's my DataBound event to select a node and open it.  This is using a SiteMapDataSource (but that doesn't really matter).

protected void navTree_DataBound(object sender, EventArgs e)
	{
		//select the current node in the tree
		//BTW, NodeBound happens before DataBound

		var currentUrl = Page.Request.Url.PathAndQuery;

		foreach (DataTreeNode node in ((WebDataTree)sender).AllNodes)
		{
			if (node.NavigateUrl == currentUrl)
			{
				node.DataTree.SelectedNodes.Clear();

				node.Selected = true;
				node.Expanded = true;
				node.ExpandAnscestors();

				break; //get out of this foreach loop
			}
		}
	}