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

        protected override void OnBeforeExpand(TreeViewCancelEventArgs e)
        {
            TreeNodePath node = e.Node as TreeNodePath;
              //
              Cursor.Current = Cursors.WaitCursor;
              try
              {
            GetSubDirs(node, e);
              }
              catch (Exception ex)
              {
            MessageBox.Show(ex.Message, MethodBase.GetCurrentMethod().Name);
            e.Cancel = true;
              }
              finally
              {
            Cursor.Current = Cursors.Default;
              }
              //
              base.OnBeforeExpand(e);
        }