private void taoMaHoaDon(string ban)
{
DataTable dt = new DataTable();
dt = bd.laybangHoaDon(ban);
if (dt.Rows.Count <= 0)
{
mahd = "001";
}
else
{
int i = dt.Rows.Count;
//mahd = (Convert.ToInt16(dt.Rows[i - 1]["MaHD"])+1).ToString();
i = Convert.ToInt16(dt.Rows[i - 1]["MaHD"].ToString().Substring(3, 3)) + 1;
//mahd = (Convert.ToInt16(mahd) + 1).ToString();
if (i < 10)
{
mahd = "00";
}
else
if (i < 100)
{
mahd = "0";
}
else
{
mahd = "";
}
mahd = mahd + i.ToString();
}
mahd = ban + mahd;
lbl_MaHD.Text = "Mã HD: " + mahd;
}