Grid: GridDropDownColumn: Error on Insert

[Thaya]

Hi, I am using GridDropDownColumn in a grid, and getting this error when I click Add:
DataBinding: 'Telerik.Web.UI.GridInsertionObject' does not contain a property with the name 'BenefitCategoryId'.

//my declarative source code
<telerik:GridDropDownColumn DataField="BenefitCategoryId" ListTextField="Description" ListValueField="Id" DataSourceID="CategorySource" HeaderText="Kategory Beskrivelse">
</telerik:GridDropDownColumn>

//DataSoruce soruce code
<mrc:BusinessObjectDataSource runat="server" ID="CategorySource" BusinessObjectName="BenefitCategory"
        BusinessObjectAssembly="BusinessObjects" BusinessObjectNamespace="Company.BusinessObjects">
        <SelectParameters>
            <asp:ControlParameter ControlID="CorporationDropDownList" PropertyName="SelectedValue"
                Name="CorporationId" Type="String" />
        </SelectParameters>
         <InsertParameters>
            <asp:ControlParameter ControlID="CorporationDropDownList" PropertyName="SelectedValue"
                Name="CorporationId" Type="String" />
        </InsertParameters>
    </mrc:BusinessObjectDataSource>

I read below articles, is this problem is solved?
http://www.telerik.com/community/forums/aspnet-ajax/grid/error-on-insert.aspx

How can I solve this problem?

Thanks,
Thaya

[Martin]

Hello Thaya,

Could you please specify what the actual exception message is? It would also be very helpful if you could open a formal support ticket and send me a sample working example demonstrating your scenario. This way I would be able to pinpoint the issue and provide you with more to-the-point solution.

Regards,
Martin
the Telerik team

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