public List <Ma> SinhMa(List <Ma> dsma, int sl, int sokitu, DateTime ngayhethan)
{
for (int i = 0; i < sl; i++)
{
string s = "";
for (int j = 0; j < sokitu; j++)
{
char kitu = (char)r.Next(65, 91);
s += kitu;
}
if (isTrungma(dsma, s))
{
i--;
}
//mã sinh ra hop lệ k bi trùng
else
{
Ma ma = new Ma();
ma.NoiDung = s;
ma.ThoiGianHetHan = ngayhethan;
ma.SoKiTu = sokitu;
dsma.Add(ma);
}
}
return(dsma);
}
public int Sua(object a)
{
DbContextTransaction transaction = db.Database.BeginTransaction();
try
{
if (a.GetType().ToString().IndexOf("NguoiDung") > 1)
{
NguoiDung temp = (NguoiDung)a;
temp = db.NguoiDungs.Where(s => s.IdND == temp.IdND).FirstOrDefault();
db.Entry(temp).CurrentValues.SetValues(a);
}
else
{
Ma temp = (Ma)a;
temp = db.Mas.Where(s => s.IdMa == temp.IdMa).First();
db.Entry(temp).CurrentValues.SetValues(a);
}
db.SaveChanges();
transaction.Commit();
return(1);
}
catch
{
transaction.Rollback();
return(0);
}
}
public bool isMaCoTheKhoa(Ma ma)
{
if (ma.TrangThai != 2 && ma.TrangThai != 1 && ma.TrangThai != 3)
{
return(true);
}
else
{
return(false);
}
}