public bool SaveDetail()
{
string invoiceno;
// 先检查发票号是否已存在
foreach (string id in _AddList)
{
invoiceno = _POInvoices.Find(o => o.id == id).invoiceno;
if (proxy.CheckExistInvoice(invoiceno) || _POInvoices.Where(o => o.invoiceno == invoiceno).Count() > 1)
{
MessageBox.Show("该发票已登记存在，不能再次登记使用");
return(false);
}
}
foreach (string id in _AddList)
{
proxy.AddPOInvoice(_POInvoices.Find(o => o.id == id));
}
foreach (string id in _DelList)
{
proxy.DeletePOInvoice(id);
}
proxy.ResetPayStatus(this.PO.pono);
return(true);
}
