asp:Parameter assigning value problem

[ptemedia]

Hi,

I have an objectdatasource as shown:

<asp:ObjectDataSource ID="ObjectDataSource2" runat="server" 
        OldValuesParameterFormatString="original_{0}" SelectMethod="GetProducts" 
        TypeName="ProductsDALTableAdapters.ProductsDTTableAdapter" 
               MaximumRowsParameterName="">
        <SelectParameters>
            <asp:QueryStringParameter DefaultValue="" Name="Param2" QueryStringField="ID" 
                Type="Int32" />
            <asp:Parameter DefaultValue="???" Name="Param1" Type="String" />
        </SelectParameters>
    </asp:ObjectDataSource>

This returns products that include (in a particular field) what is placed instead of ??? with the exception of the current product shown. It works fine when I type in the correct value, but the value should really be 'ProductName' from objectdatasource1 so that it works on every page.

Any help is much appreciated.