private void iNgayGD_EditValueChanged(object sender, EventArgs e)
{
if (_ks.ID < 1)
{
DateTime d = iNgayGD.DateTime;
string STT = _ksD.GetSTT(d);
if (STT.Split('-')[0].EndsWith(d.ToString("MM")))
{
_ks.MaCho = $"{d.ToString("yy")}T{d.ToString("MM")}-{(int.Parse(STT.ToString().Split('-')[1]) + 1).ToString("000#")}";
}
else
{
_ks.MaCho = $"{d.ToString("yy")}T{d.ToString("MM")}-0001";
}
iMaCho.Text = _ks.MaCho;
}
}
