Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.

[Eric]

I have a RadGrid which lists addresses. I have configured it to popup during edit, in which there are 2 dropdown lists, for country and for province - the first dropdown  being set to AutoPostBack=true, so that any change there, will also change the list of provinces available.
But when I change the country selection, I get this error "Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control."

Any ideas on how to get around this problem?

=================
                                   <td>
                                    Country:</td>
                                <td>
    <asp:ObjectDataSource ID="obCountry" runat="server"
        SelectMethod="GetAllCountries"
        TypeName="CNH.CountryController">
    </asp:ObjectDataSource>
                                <asp:DropDownList ID="cbCountry" runat="server" AutoPostBack="True"  SelectedValue='<%# Bind("intCountry") %>'
                                    DataSourceID="obCountry" DataTextField="txtName"
                                    DataValueField="intcountry">
                                </asp:DropDownList>   

</td>                           
                                                               
                             
 
                            </tr>                                                                                 
                            <tr>
                                <td>
                                    Province:</td>
                                <td>
                                    <asp:ObjectDataSource ID="obProv" runat="server"
                                        SelectMethod="GetAllProvinces"
                                        TypeName="CNH.ProvStateController" >
                                        <SelectParameters>
                                            <asp:ControlParameter ControlID="cbCountry"
                                                Name="intCountry" PropertyName="SelectedValue" Type="Int32" />
                                        </SelectParameters>
                                    </asp:ObjectDataSource>                               
                                     <asp:DropDownList ID="cbProv" runat="server"
                                        DataSourceID="obProv" DataTextField="txtname"  SelectedValue='<%# Bind("intprovstate") %>'
                                        DataValueField="intprovstate">
                                    </asp:DropDownList>
                                   
                                </td>

[Daniel]

Hello Eric,

I found an interesting discussion about this error in Microsoft Connect:
Rebinding a DropDownList with a SelectedValue AFTER a PostBack (when the dataObject is empty) causes errors

Let us know whether this helps.

Best regards,
Daniel
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.

[Princy]

Hello Eric,

Try setting the selected value as shown in the code below and see if it helps:
aspx:

<asp:DropDownList ID="cbCountry" runat="server" AutoPostBack="True" SelectedValue='<%# DataBinder.Eval(Container.DataItem,"intCountry") %>'  DataSourceID="obCountry" DataTextField="txtName" DataValueField="intcountry">
</asp:DropDownList>

Thanks
Princy.

[Eric]

Hi Princy, I'm still getting the same error...