private string MaTuTang()
{
string s = "";
DateTime time = DateTime.Now;
string ngay = time.ToString("dd");
string thang = time.ToString("MM");
string nam = time.ToString("yy");
string date = ngay + thang + nam;
List <NhanVienDTO> ds = myNhanVienBUL.LayThongTinNhanVien();
if (ds.Count <= 0)
{
s = "NV_" + date + "_001";
}
else
{
string newstt = "";
int k = ds.Count;
int stt = Convert.ToInt32(ds[k - 1].MaNhanVien.ToString().Substring(10, 3));
string checkday = ds[k - 1].MaNhanVien.ToString().Substring(3, 6);
if (date == checkday)
{
int tempstt = stt + 1;
if (tempstt <= 9)
{
newstt = "00" + tempstt.ToString();
}
if (tempstt >= 10 && tempstt < 100)
{
newstt = "0" + tempstt.ToString();
}
if (tempstt == 100)
{
newstt = "100";
}
s = "NV_" + date + "_" + newstt;
}
else
{
s = "NV_" + date + "_001";
}
}
return(s);
}