Programmatically Created RadAjaxManager won't work properly

[Michael]

I'm programmatically creating a RadAjaxManager object as I'm creating custom webservercontrol that wraps the Grid, ContextMenus, and a Loading Panel to do some custom operations.

So far, I've been unable to get the RadAjaxManager to operate as it does when it's added directly to a page.  The loading indicator doesn't show up on the grid at all, and I consistently get an error when attempting to fire Rebind on the grid from an ajaxRequest:

'ctl00_MainContent_SpreadsheetControl_ctl00_MainContent_SpreadsheetControl_MainGridPanel'. If it is being updated dynamically then it must be inside another UpdatePanel.

The code used to create and initialize the objects is below.
Any idea what the issue could be?

protected void CreateControls()  //Called from CompositeControl constructor
        {
            AjaxManager = new RadAjaxManager() { ID="AjaxManager", EnableAJAX = true};
            InputManager = new RadInputManager() { EnableEmbeddedBaseStylesheet = false };
            CellContextMenu = new RadContextMenu() { ID = "CellContextMenu", OnClientLoad = "onCellContextMenuLoad" };
            HeaderContextMenu = new RadContextMenu() { ID = "HeaderContextMenu", OnClientLoad = "onCellContextMenuLoad" };
            LoadingPanel = new RadAjaxLoadingPanel() { ID = "RadAjaxLoadingPanel" };
            Grid = new RadGrid()
            {
                ID = "MainGrid",
                AutoGenerateColumns = false,
                AllowMultiRowEdit = true,
                CellSpacing = 0,
                CellPadding = 0,
                GridLines = GridLines.None,
                AllowAutomaticUpdates = true,
                AllowFilteringByColumn = true,
                AllowSorting = true,
                GroupingEnabled = false,
                ShowGroupPanel = false,
            };
        }
        protected void InitializeComponent()  //called from 'CreateChildControls' override.
        {

            this.Controls.Add(AjaxManager);

            Grid.ClientSettings.Scrolling.AllowScroll = true;
            Grid.ClientSettings.Scrolling.UseStaticHeaders = true;

            Grid.ClientSettings.ClientEvents.OnGridCreated = "onGridCreated";
            Grid.ClientSettings.ClientEvents.OnRowCreated = "onRowCreated";
            Grid.ClientSettings.ClientEvents.OnRowDestroying = "onRowDestroying";
            Grid.ClientSettings.ClientEvents.OnRowContextMenu = "onRowContextMenu";


            Grid.MasterTableView.CommandItemDisplay = GridCommandItemDisplay.Bottom;
            Grid.MasterTableView.EditMode = GridEditMode.InPlace;
            Grid.MasterTableView.AllowCustomSorting = true;


            this.Controls.Add(Grid);
            this.Controls.Add(CellContextMenu);
            this.Controls.Add(HeaderContextMenu);
            this.Controls.Add(LoadingPanel);


            Grid.PreRender += OnPreRender;
            Grid.ItemDataBound += OnItemDataBound;


        }

protected override void OnLoad(EventArgs e)
        {

            //base.OnLoad(e);
            RadScriptManager.RegisterStartupScript((Control)this, this.GetType(), this.AjaxManager.ClientID, "identifyAjaxManager('" + AjaxManager.ClientID + "');", true);
            AjaxManager.AjaxSettings.AddAjaxSetting(Grid, Grid, LoadingPanel);
            AjaxManager.AjaxSettings.AddAjaxSetting(AjaxManager, Grid);
        }

        }

[Iana Tsolova]

Hi Michael,

Try following the steps in this help article as see if it makes any difference:
http://www.telerik.com/help/aspnet-ajax/ajax-ajax-manager-programmatic-creation.html

Kind regards,
Iana Tsolova
the Telerik team