ASP.Net Update Command Not Working

I'm using the AutoGenerateEditButton feature for a gridview and cannot get my update command to work.  I have DataKeyNames="ID" set on my gridview.  The delete command works fine.  If I hard code an ID (example:  WHERE [ID] = 4), the update command works fine.  It just doesn't seem to be recognizing the parameter @ID.  I'm using an Access database and ID is an autonumber field.  I've tried changing the paramter "type" from int32 to string.  I've tried setting OldValuesParameterFormatString="{0}" and ="original_{0}" .  I don't have any code in my code behind file.   Thanks for your help.

Code snippet:

        UpdateCommand="Update [Name] Set [EmpName] = @EmpName WHERE [ID] = @ID "
        DeleteCommand="Delete * FROM Name WHERE [id]= @ID"

             <UpdateParameters>
             <asp:Parameter Name="ID" Type=int32 />
             <asp:Parameter Name="EmpName" Type="String" />
            </UpdateParameters>Start Free Trial