title: ASPxTreelist server side node selection doesnt work
body: <p>i'm trying to select/unselect aspxtreelist nodes that meet the criteria.when user click  a row and it fires an event which handled by server side eventhandler.When i debug the code everthing ok.selection works but on the browser side selection remains same as before eventrised.</p>
  
  <pre><code>protected void grid_FocusedRowChanged(object sender, EventArgs e)
      {
          menutree.UnselectAll();
          EUserRole role = (EUserRole)grid.GetRow(grid.FocusedRowIndex);
          long roleguid = role.Guid;
  
          TreeListNodeIterator iterator = new TreeListNodeIterator(menutree.RootNode);
          while (iterator.GetNext() != null)
          {
              if ((long)iterator.Current["RoleGuid1"] == roleguid)
                  iterator.Current.Selected = true;
          }
  
      }
  </code></pre>
  
  <p>How can solve the problem?</p>