WPF passing the Int argument to a data object provider method

Question

Hi, I'm trying to produce a master/detail datagrid view. I'm using object data providers. Now I have seen many examples when the argument of a method for returning the records for the detail view is a string, like in this example:

    <!-- the orders datasource -->
    <ObjectDataProvider x:Key="OrdersDataProvider"
       ObjectType="{x:Type local:OrdersDataProvider}"/>
    <ObjectDataProvider x:Key="Orders" MethodName="GetOrdersByCustomer"
            ObjectInstance="{StaticResource OrdersDataProvider}" >
        <ObjectDataProvider.MethodParameters>
            <x:Static Member="system:String.Empty"/>
        </ObjectDataProvider.MethodParameters>
    </ObjectDataProvider>

But in my case, the argument that I want to pass is the int ID not the string. Can I still somehow use the object data provider to return all the records from the database for the detail view if the argument passed to a method has to be an int? How could it be implemented in MVVM?

Thanks a lot for any advice1