Custom TreeView with a Select (onclick) event

One thing that disturbs me a bit is that the TreeView control does not have an event that is triggered when the user clicks an already selected item (in my case, I need to know about this so that I can refresh data. The SelectedNodeChanged is never fired when you click on an already selected item).

So wondered if it is possible to create my custom implementation of the TreeView and it turned out to be quite easy to do after a quick check in the reflector

using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace GB.ControlLib { 
public class GTreeView : System.Web.UI.WebControls.TreeView
{
 private static readonly object TreeViewSelected = new object();
 public event EventHandler Select
 {
  add { base.Events.AddHandler(TreeViewSelected, value); }
  remove { base.Events.RemoveHandler(TreeViewSelected, value); }
 }
 protected virtual void OnSelect(EventArgs e)
 {
  EventHandler handler = (EventHandler)base.Events[TreeViewSelected];
  if (handler != null) {
    handler(this, e);
  }
 }
 internal void RaiseOnSelect()
 {
  this.OnSelect(EventArgs.Empty);
 }
 protected override void RaisePostBackEvent(string eventArgument)
 {
  base.RaisePostBackEvent(eventArgument);


  if (eventArgument.Length != 0) {
   char ch = eventArgument[0];
   string val = HttpUtility.HtmlDecode(eventArgument.Substring(1));
   // Pathseparator in eventArgument is backslash, so we must temporary set the separator
   char oldPathSeparator = PathSeparator;
   PathSeparator = '\\';
   TreeNode node = FindNode(val);
   PathSeparator = oldPathSeparator;

   if (ch == 's') {
    if (node != null) {
     if ((node.SelectAction == TreeNodeSelectAction.Select) || (node.SelectAction == TreeNodeSelectAction.SelectExpand)) {
      RaiseOnSelect();
     }
    }
   }
  }
 } 

}

}