private void item_Select(object sender, EventArgs e)
{
if (sbxItem.ItemID > 0)
{
sales_budget sales_budget = sales_budgetViewSource.View.CurrentItem as sales_budget;
item item = SalesBudgetDB.items.Where(x => x.id_item == sbxItem.ItemID).FirstOrDefault();
if (item != null && item.id_item > 0 && sales_budget != null)
{
Task Thread = Task.Factory.StartNew(() => select_Item(sales_budget, item));
}
sales_budget.RaisePropertyChanged("GrandTotal");
}
}
private void calculate_vat(object sender, EventArgs e)
{
sales_budget sales_budget = (sales_budget)sales_budgetDataGrid.SelectedItem;
sales_budget.RaisePropertyChanged("GrandTotal");
List <sales_budget_detail> sales_budget_detail = sales_budget.sales_budget_detail.ToList();
dgvvat.ItemsSource = sales_budget_detail
.Join(SalesBudgetDB.app_vat_group_details, ad => ad.id_vat_group, cfx => cfx.id_vat_group
, (ad, cfx) => new { name = cfx.app_vat.name, value = ad.unit_price * cfx.app_vat.coefficient, id_vat = cfx.app_vat.id_vat, ad })
.GroupBy(a => new { a.name, a.id_vat, a.ad })
.Select(g => new
{
id_vat = g.Key.id_vat,
name = g.Key.name,
value = g.Sum(a => a.value * a.ad.quantity)
}).ToList();
}