private void btn_CustomDateSearch(object sender, RoutedEventArgs e)
{
DateTime tempFromDate = (DateTime)dp_from.SelectedDate;
DateTime tempToDate = (DateTime)dp_to.SelectedDate;
DateTime fromDate = Convert.ToDateTime(tempFromDate.ToShortDateString() + " 12:00:00 AM");
DateTime toDate = Convert.ToDateTime(tempToDate.ToShortDateString() + " 11:59:59 PM");
dg_DSR.ItemsSource = null;
dg_DSR.ItemsSource = SaleItem.getAllMappedToFoodITemViewModelForDSRByDate(fromDate, toDate);
}