Grid Features unavailable in Grid in ASCX file

[Hk]

Hi,
i'm trying to implement a simple demo you wrote on this address:
http://demos.telerik.com/ASPNET/Prometheus/Grid/Examples/GeneralFeatures/CalculatedColumns/DefaultCS.aspx

With the change that I implement the code in a control. You can assume the control inherits <scriptManager>. The page that loads the control does that thorugh the TabStrip comp.

The problem is that when I try to filter the data using the GUI, I get an error: "Object reference is not set to an object". When I put the same code in a single ASPX file, It works fine. I had several problems with grid examples in your site when I tried to include them as controls.

Can you please check it out?

        <!-- content start -->
        <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
            <AjaxSettings>
                <telerik:AjaxSetting AjaxControlID="RadGrid1">
                    <UpdatedControls>
                        <telerik:AjaxUpdatedControl ControlID="RadGrid1" />
                    </UpdatedControls>
                </telerik:AjaxSetting>
            </AjaxSettings>
        </telerik:RadAjaxManager>
        <telerik:RadGrid ShowGroupPanel="true" AutoGenerateColumns="false" ID="RadGrid1"
            DataSourceID="SqlDataSource1" Skin="Vista" AllowFilteringByColumn="True" AllowSorting="True"
            ShowFooter="True" runat="server" GridLines="None" AllowPaging="true">
            <PagerStyle Mode="NextPrevAndNumeric" />
            <MasterTableView AllowMultiColumnSorting="true">
                <Columns>
                    <telerik:GridBoundColumn Aggregate="Count" DataField="id" HeaderText="Product ID"
                        FooterText="Total products: ">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn DataField="title" HeaderText="Product name" SortExpression="title"
                        UniqueName="title">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn Aggregate="Sum" DataField="price" HeaderText="Unit price"
                        FooterText="Total price: ">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn Aggregate="Sum" DataField="amount" HeaderText="Units in stock"
                        FooterText="All units in stock: ">
                    </telerik:GridBoundColumn>
                    <telerik:GridCalculatedColumn HeaderText="Total Price" UniqueName="TotalPrice" DataType="System.Double"
                        DataFields="price, amount" Expression="{0}*{1}" FooterText="Total : " Aggregate="Sum" />
                </Columns>
            </MasterTableView>
            <ClientSettings AllowDragToGroup="true" EnableRowHoverStyle="true" />
        </telerik:RadGrid>
        <asp:Button ID="Button1" Text="PostBack!" CssClass="button" Style="margin: 10px 22px 10px 0px"
            runat="server"></asp:Button>
        Click PostBack to see the state of the grid is preserved.
        <br />
        <asp:SqlDataSource ID="SqlDataSource1" ConnectionString="Data Source=vmsmc;Initial Catalog=hadar;User ID=sa"
            SelectCommand="SELECT * FROM tblProducts" runat="server"></asp:SqlDataSource>
    </div>

[Sebastian]

Hello Hadar,

From your description I assume that there is some kind of issue with the implementation of your custom control because you specified that a stand-alone demo of the grid on a plain page works properly. Note that the same demo is available in your local RadControls for ASP.NET AJAX installation at this location:

C:\Program Files\telerik\RadControls for ASPNET AJAX Q3 2008\Live Demos\Grid\Examples\GeneralFeatures\CalculatedColumns

To progress in our investigation, I suggest you prepare a stripped working version of your project (including the custom control which hosts regular RadGrid for ASP.NET AJAX instance) and send it attached to a formal support ticket. Thus we will be able examine your code logic and provide further directions/assistance.

Best regards,
Sebastian
the Telerik team

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