public void AutoInvoiceGenerate()
{
decimal AlreadyExistInvoice = _PurchaseRepository.AlreadyExistInvoice();
int code = 1;
if (AlreadyExistInvoice >= 1)
{
var LastExistInvoice = _PurchaseRepository.LastExistInvoice();
if (LastExistInvoice != null)
{
code = Convert.ToInt32(LastExistInvoice.Invoice);
code++;
}
txtInvoice.Text = code.ToString("000");
}
else
{
txtInvoice.Text = "001";
}
}