PostBack ID Null for AjaxManager

[William]

I'm getting an error: get_postBackElement().id' is null or not an object. This only occurs when I add in the RadAjaxManager, so I'm fairly sure it has something to do with that. This doesn't seem all that complicated. Am I missing something?

ASPX 

    <telerik:RadAjaxManager ID="RadAjaxManager222" runat="server">
    <AjaxSettings>
        <telerik:AjaxSetting AjaxControlID="Timer1">
            <UpdatedControls>
                <telerik:AjaxUpdatedControl ControlID="improvementRadGrid" LoadingPanelID="improvementLoading" />
            </UpdatedControls>
        </telerik:AjaxSetting>
    </AjaxSettings>
</telerik:RadAjaxManager>



<h1> Improvement Day Inventory </h1>
<br />

<telerik:RadAjaxLoadingPanel ID="improvementLoading" runat="server" />
<telerik:RadGrid ID="improvementRadGrid" runat="server" AutoGenerateColumns="false" DataSourceID="inventoryDataSource">
    <MasterTableView>
        <Columns>
            <telerik:GridBoundColumn DataField="Description" HeaderText="Description" />
            <telerik:GridBoundColumn DataField="Count" HeaderText="Quanitity" HeaderStyle-Font-Bold="true" ItemStyle-Font-Bold="true" />
            <telerik:GridBoundColumn DataField="MinimumQuantity" HeaderText="Min" />
            <telerik:GridBoundColumn DataField="MaximumQuantity" HeaderText="Max" />
        </Columns>
    </MasterTableView>
</telerik:RadGrid>

<asp:Timer ID="Timer1" runat="server" Interval="5000" OnTick="Timer1_Tick" />

<asp:SqlDataSource ID="inventoryDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:AssetWhereConnectionString %>"
SelectCommand="ImprovementDay" SelectCommandType="StoredProcedure"></asp:SqlDataSource>

C#

public void Timer1_Tick(object sender, EventArgs e)
{
    improvementRadGrid.Rebind();
}

[Iana Tsolova]

Hello William ,

Under which .NET version is the web site built? If it is .NET 4.0 can you try setting the Page ClientIDMode to AutoID and see if it makes any difference?

Greetings,
Iana Tsolova
the Telerik team