History Points and RadGrid

[Justin]

I'm hoping someone can help me by either pointing me to a straight forward example or pointing out the error(s) in my code.  I'm attempting to provide history points when a user is interacting with an ajax grid.  I've started just with paging but eventually want to get this working with sorting as well.  

I have a master page which defines a RadScriptManager:

<telerik:RadScriptManager ID="RadScriptManager1" runat="server" EnablePartialRendering="true" EnableHistory="true" EnableSecureHistoryState="false"></telerik:RadScriptManager>

On a content page I have a ScriptManagerProxy to invoke the OnNavigate event (when a browser back/forward button is clicked):

<asp:ScriptManagerProxy ID="ProxyScriptManager" runat="server" OnNavigate="ScriptManager_OnNavigate" />

The ScriptManager_OnNavigate handler is defined as such:

protected void ScriptManager_OnNavigate(object sender, HistoryEventArgs e)
        {
            if (e.State.Count <= 0)
            {
                // setup default state
                RadGrid1.MasterTableView.CurrentPageIndex = 0;
                RadGrid1.Rebind();
                return;
            }

            string key = e.State.AllKeys[0];
            string state = string.Empty;

            if (string.Equals(key, GridPageHistoryKey))
            {
                state = e.State[key];
                int pageIndex;
                if (int.TryParse(state, out pageIndex))
                {
                    RadGrid1.MasterTableView.CurrentPageIndex = pageIndex;
                    RadGrid1.Rebind();
                }
            }


        }

On the grid's OnPageIndexChanged event handler, I set a private variable to true which is then checked in the grids OnPrerender event:

protected void RadGrid1_PageIndexChanged(object sender, GridPageChangedEventArgs e)
        {
            _saveState = true;
        }

protected void RadGrid1_PreRender(object sender, EventArgs e) {
if (_saveState)
            {
                if (RadScriptManager.GetCurrent(this.Page).IsInAsyncPostBack && !RadScriptManager.GetCurrent(this.Page).IsNavigating)
                {
                    var state = RadGrid1.MasterTableView.CurrentPageIndex.ToString();
                    RadScriptManager.GetCurrent(this.Page).AddHistoryPoint(GridPageHistoryKey, state);
                }
            }

It appears that the add history point is getting created and the OnNavigate code is executing but the grid doesn't update when clicking the back button.  Am I missing a crucial step?  Is there an example that doesn't just point me to:  http://www.telerik.com/help/aspnet-ajax/ajax-back-forward-btns.html 

Thanks for any help!

[Walter]

Have you put your radgrid in the RadAjaxManager so it will be updated if the RadScriptManager triggers it ?

Example:
<telerik:RadAjaxManagerProxy ID="ramProxy" runat="server">
        <AjaxSettings>
          ......
            <telerik:AjaxSetting AjaxControlID="RadScriptManager1">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="RadGrid1"  />
                </UpdatedControls>
            </telerik:AjaxSetting>

        </AjaxSettings>
    </telerik:RadAjaxManagerProxy>