hi, i have a treeview i'm wanting to use as a left side nagivation menu.

 it has a root node, 2 parent nodes (each parent node has 30 leaf nodes).

q1. how do i set it so by default when the page loads the treeview isn't expanded/collapsed?

q2. when the top parent node is minimised and the 2nd parent node is expanded, whenever a user clicks on a leaf node from the 2nd parent node it automatically maximises the top parent node aswell, how do i set it so it doesn't do this?

thanks in advance!
 

Hi joeycrack,

>>q1. how do i set it so by default when the page loads the treeview isn't expanded/collapsed?

Set ExpandDepth for tree as 0, treeview.ExpandDepth = 0; in the page_load

>> q2. when the top parent node is minimised and the 2nd parent node is expanded, whenever a user clicks on a leaf node from the 2nd parent node it automatically maximises the top parent node aswell, how do i set it so it doesn't do this?

In the SelectedNodeChanged handler for leaf node (in code behind ) put this code:

 protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
    {
        TreeView1.ExpandDepth = 0;

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

Hope this helps.

cheers!! 

I guess its better to use CollapseAll() instead of setting ExpandDepth:

 protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
    {
        //TreeView1.ExpandDepth = 0;

        TreeView1.CollapseAll();

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