private void FetchData()
 {
     // Public Northwind OData Service
     var t = new NorthwindEntities(new Uri("http://services.odata.org/Northwind/Northwind.svc/"));
     var q = (from product in t.Products
              select product).Take(25);
     datasource = q.ToList();
 }
 private void FetchData()
 {
     // Public Northwind OData Service
     var t = new NorthwindEntities(new Uri("http://services.odata.org/Northwind/Northwind.svc/"));
     var q = (from order in t.Orders.Expand("Order_Details/Product")
              select order).Take(25);
     datasource = q.ToList();
 }