@User-14814377 : If you paid for the expensive Telerik software, use their support system and documentation. Find out if their RadTreeView offers the WinForm Events shown here.
with WinForms, I frequently use code like this with a TreeView:
private TreeNode currentClkNode, currentDblClkNode;
private void treeView1_MouseDown(object sender, MouseEventArgs e)
{
if(treeView1.GetNodeAt(e.Location) == null)
{
}
}
private void treeView1_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
{
currentClkNode = e.Node;
currentDblClkNode = null;
}
private void treeView1_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
{
currentDblClkNode = e.Node;
}