Raccoom.Windows.Forms.TreeViewFolderBrowser.OnDoubleClick C# (CSharp) Method

        protected override void OnDoubleClick(EventArgs e)
        {
            if (SelectedNode == null) return;
              //
              TreeNodePath node = SelectedNode as TreeNodePath;
              if (node == null) return;
              //
              if ((node.Nodes.Count > 0) || (node.Path.Length > 3)) return;
              //
              node.AddDummyNode();
              //
              base.OnDoubleClick(e);
        }