private void MODIFYbtn_Click(object sender, EventArgs e)
{
Order order = OrderSource1.Current as Order;
if (order == null)
{
MessageBox.Show("请选择一个订单进行修改");
return;
}
AddModifyForm form2 = new AddModifyForm(true);
form2.CurrentOrder = order;
form2.Addbindings(order);
form2.ShowDialog();
QueryAll();
}