public static void Update(string oldID, QuanLy newQuanLy, Database database)
{
QuanLy quanLy = QuanLy.Find(oldID, database);
quanLy.Copy(newQuanLy);
}
public static string DangNhap(Database database)
{
Console.Clear();
string cv;
string ID;
string MK;
int sls = 0;
while (true)
{
Console.Write("Ban la (ql hay tn|nhap -1 de tac phan men):");
cv = Console.ReadLine();
if (cv == "-1")
{
return(cv);
}
if (cv == "ql" || cv == "tn")
{
break;
}
else
{
Console.WriteLine("Khong hop le");
}
}
if (cv == "ql")
{
while (true)
{
Console.Write("ID:");
ID = Console.ReadLine();
if (QuanLy.Find(ID, database) == null)
{
Console.WriteLine("ID khong ton tai");
if (++sls == 3)
{
return(null);
}
}
else
{
break;
}
}
while (true)
{
Console.Write("Mat Khau:");
MK = Console.ReadLine();
QuanLy quanLy = QuanLy.Find(ID, database);
if (QuanLy.Find(ID, database).MatKhau != MK)
{
Console.WriteLine("Sai Mat Khau");
if (++sls == 3)
{
return(null);
}
}
else
{
break;
}
}
return(cv);
}
while (true)
{
Console.Write("ID:");
ID = Console.ReadLine();
if (ThuNgan.Find(ID, database) == null)
{
Console.WriteLine("ID khong ton tai");
if (++sls == 3)
{
return(null);
}
}
else
{
break;
}
}
while (true)
{
Console.Write("Mat Khau:");
MK = Console.ReadLine();
if (ThuNgan.Find(ID, database).MatKhau != MK)
{
Console.WriteLine("Sai Mat Khau");
if (++sls == 3)
{
return(null);
}
}
else
{
break;
}
}
return(cv);
}
public static void Delete(string iD, Database database)
{
database.QuanLys.Remove(QuanLy.Find(iD, database));
}
