private void stListView1_Collapsing(object sender, TreeBranchCollapsingEventArgs e)
 {
     if (e.Model is ObjectTreeNode)
     {
         ((ObjectTreeNode)e.Model).OnAfterCollapse();
     }
 }
 private void tlvPluginsList_Collapsing(object sender, TreeBranchCollapsingEventArgs e)
 {
     if (ModifierKeys == Keys.Control)
     {
         if (TlvControl.CanExpand(e))
         {
             RecursiveExpand(TlvControl.GetChildren(e));
         }
     }
 }