Grid goes Empty on PostBack

[Alex]

Hi,

Im having some trouble with a simple Grid bound declaratively to an ObjectDataSource, on first PageLoad it works fine but after PostBack (sorting for example) the Grid goes empty as if it loses the DataSource. For testing purposes i also tried an asp:GridView and that works perfectly fine. Any Ideas on what could be the Problem?
The SelectMethod on the ObjectDataSource returns an DataSet.

<telerik:RadGrid

    ID="rgData"

    runat="server"

    AllowSorting="true"

    Skin="<%$Appsettings:TelerikSkin %>"   

    ClientSettings-AllowColumnsReorder="true"

    ClientSettings-Resizing-AllowColumnResize="true"

    DataSourceID="odsGrid"

    Width="400px"

    AutoGenerateColumns="false">

    <MasterTableView>

        <Columns>

            <telerik:GridBoundColumn

                HeaderText="AttributeName"

                SortExpression="AttributeName"

                DataField="AttributeName">

            </telerik:GridBoundColumn>               

            <telerik:GridBoundColumn

                HeaderText="DataValue"

                SortExpression="DataValue"

                DataField="DataValue">

            </telerik:GridBoundColumn>               

        </Columns>

    </MasterTableView>               

</telerik:RadGrid>

 

<asp:GridView

    ID="gData"

    runat="server"

    AllowSorting="true"

    DataSourceID="odsGrid"

    Width="400px"

    AutoGenerateColumns="false">

    <Columns>   

        <asp:BoundField

                HeaderText="AttributeName"

                SortExpression="AttributeName"

                DataField="AttributeName">       

        </asp:BoundField>               

        <asp:BoundField

                HeaderText="DataValue"

                SortExpression="DataValue"

                DataField="DataValue">

        </asp:BoundField>

    </Columns>   

</asp:GridView>

 

<asp:ObjectDataSource

    ID="odsGrid"

    SelectMethod="GetGridData"

    TypeName="dataViewGridInterface"     

    runat="server"></asp:ObjectDataSource>

Regards,
Alex

[Princy]

Hello Alex,

In order to implement advance features like paging/sorting you should use advanced data binding using the NeedDataSource event. Check the following help documentation which explains more about this.
Advanced Data-binding (using NeedDataSource event).

Thanks,
Princy.