Question

Im using treeview in asp.net

how can i check if parent contains childnodes in treeview selected node changed event.

Answer 1

In case you want to look if the parent of the selected node contains other children nodes, it is safe to say

bool ContainsOtherChildren = treeView1.SelectedNode.Parnet.ChildNodes.Count > 1;

since you know that it already has at least one child node (the selected one)

I would however make another check if there is indeed a parent such as

if(treeView1.SelectedNode.Parent != null)
{
   ContainsOtherChildren = treeView1.SelectedNode.Parnet.ChildNodes.Count > 1;
}