string TaoMaKhoiLopMoi()
{
KhoiLopBLL khoiLopBll = new KhoiLopBLL();
string maKhoiLopMax = khoiLopBll.GetMaKhoiLopMax();
string[] listTemp = maKhoiLopMax.Split('L');
string maKhoiLop = listTemp[1];
maKhoiLop = "KL" + (Int32.Parse(maKhoiLop) + 1).ToString();
return(maKhoiLop);
}
public ThemSuaKhoiLop()
{
InitializeComponent();
lbTop.Text = "Thêm mới khối lớp";
KhoiLopBLL khoiLopBll = new KhoiLopBLL();
string maKhoiLopMax = khoiLopBll.GetMaKhoiLopMax();
string [] listTemp = maKhoiLopMax.Split('L');
string maKhoiLop = listTemp[1];
tbMaKhoiLop.Text = "KL" + (Int32.Parse(maKhoiLop) + 1).ToString();
}