or
var query = _context.Taxes.OrderBy(o => o.TaxID);
//Order_Details.OrderBy(o => o.OrderID);
var view =
new
VirtualQueryableCollectionView(query) {LoadSize = 10 };
DataContext = view;
private
void
Button_Click(
object
sender, RoutedEventArgs e)
{
(DataContext
as
VirtualQueryableCollectionView).AddNew(
new
Tax() { TaxCode =
"45"
,TaxPercentage2 = 0.34f });
}
(DataContext
as
VirtualQueryableCollectionView).VirtualItemCount++;
(DataContext
as
VirtualQueryableCollectionView).
Insert(0, newItem);
context.CreateObjectSet<TValue>().AddObject(newItem);
context.SaveChanges();