RadGrid, ObjectDataSource and Parameters

[Thiago]

Hey there,

I've got a RadGrid bound to an objectDataSource but I've been running into an odd situation, on my grid I got the following declared:

<telerik:GridDropDownColumn DataField="Continent.Id" HeaderText="Continente" DataSourceID="odsContinent" ListTextField="Name" ListValueField="Id" UniqueName="Continent" SortExpression="Continent" />

The problem is, regardless of the params I set on my objectDataSource I am not able to switch the param name from Continent.Id to something I could name a parameter on C# Code, so I always end up with the following error when trying to update an item:

"Sys.WebForms.PageRequestManagerServerErrorException: ObjectDataSource 'odsCountry' could not find a non-generic method 'GridUpdate' that has parameters: Alias, Fullname, Capital, Continent.Id, ThreeDigitCountryCode, ThreeLetterCountryCode, TwoLetterCountryCode, Id."

<asp:ObjectDataSource ID="odsCountry" runat="server"
            TypeName="Highland.Models.Country"
            EnablePaging="true"
            SelectMethod="SlicedFindAll"
            SelectCountMethod="Count"
            OldValuesParameterFormatString="{0}"
            InsertMethod="GridInsert" DeleteMethod="GridDelete" UpdateMethod="GridUpdate"
            StartRowIndexParameterName="firstResult"
            MaximumRowsParameterName="maxResults" >
            <DeleteParameters>
                <asp:Parameter Name="Id" Type="Int32" />
            </DeleteParameters>
            <UpdateParameters>
                <asp:Parameter Name="Id" Type="Int32" />
                <asp:Parameter Name="Alias" Type="String" />
                <asp:Parameter Name="Fullname" Type="String" />
                <asp:Parameter Name="Capital" Type="String" />
                <asp:Parameter Name="Continent" Type="String" />
                <asp:Parameter Name="ThreeDigitCountryCode" Type="Int32" />
                <asp:Parameter Name="ThreeLetterCountryCode" Type="String" />
                <asp:Parameter Name="TwoLetterCountryCode" Type="String" />
            </UpdateParameters>
            <InsertParameters>
                <asp:Parameter Name="Id" Type="Int32" />
            </InsertParameters>
        </asp:ObjectDataSource>

Thanks for your time :)

-Thi

[Rosen]

Hi Thiago,

There are several way to correct the error you are getting:
     - You should use ObjectDataSource's Updating event to modify the constructed InputParameters list (passed through the event's argument object).
    - Consider handling the CUD operations manually, instead using DataSourceControl
    - Consider setting the column as ReadOnly thus its values will not be added to InputParameters collection

All the best,
Rosen
the Telerik team