public static void themTK(string tentk, string mk, float soTienThem)
        {
            QLInternetDataContext db = new QLInternetDataContext();

            DichVu giadv = db.DichVus.Where(p => p.TenDV.Trim() == "GiaCuoc").SingleOrDefault();

            TaiKhoan   tk = new TaiKhoan();
            ThongTinTK tt = new ThongTinTK();

            tk.MatKhau   = maHoaMK(mk);
            tk.TenTK     = tentk;
            tk.TongTG    = 0;
            tk.TrangThai = false;

            tk.TGconLai = soTienThem / giadv.GiaDV;

            LichSu ls = new LichSu();

            ls.TenTK    = tentk;
            ls.TienThem = soTienThem;
            ls.NgayGD   = DateTime.Now;
            ls.TGThem   = soTienThem / giadv.GiaDV;

            db.TaiKhoans.InsertOnSubmit(tk);

            db.SubmitChanges();

            db.LichSus.InsertOnSubmit(ls);

            db.SubmitChanges();
        }
        public static void suaThongTin(string tenTK, string matKhau, string sdt, string email, float soTienThem)
        {
            QLInternetDataContext db = new QLInternetDataContext();

            ThongTinTK tt    = db.ThongTinTKs.Where(p => p.TenTK == tenTK).SingleOrDefault();
            TaiKhoan   tk    = db.TaiKhoans.Where(p => p.TenTK == tenTK).SingleOrDefault();
            DichVu     giadv = db.DichVus.Where(p => p.TenDV.Trim() == "GiaCuoc").SingleOrDefault();

            if (tt == null)
            {
                return;
            }
            else
            {
                if (matKhau != "")
                {
                    tk.MatKhau = maHoaMK(matKhau);
                }

                if (soTienThem != 0)
                {
                    tk.TGconLai = soTienThem / giadv.GiaDV;
                }

                tt.SDT   = sdt;
                tt.Email = email;

                db.SubmitChanges();
            }
        }
        public static ThongTinTK layThongTintk(string tentk)
        {
            QLInternetDataContext db = new QLInternetDataContext();

            ThongTinTK tt = db.ThongTinTKs.Where(p => p.TenTK.Trim() == tentk).SingleOrDefault();

            return(tt);
        }
        public static void xoaTK(string tentk)
        {
            QLInternetDataContext db = new QLInternetDataContext();

            TaiKhoan tk = db.TaiKhoans.Where(p => p.TenTK.Trim() == tentk).SingleOrDefault();

            ThongTinTK tt = db.ThongTinTKs.Where(p => p.TenTK.Trim() == tentk).SingleOrDefault();

            db.ThongTinTKs.DeleteOnSubmit(tt);
            db.TaiKhoans.DeleteOnSubmit(tk);

            db.SubmitChanges();
        }
        public static void themThongTin(string tenTK, string sdt, string email)
        {
            QLInternetDataContext db = new QLInternetDataContext();

            ThongTinTK tttk = new ThongTinTK();

            tttk.TenTK = tenTK;
            if (sdt != "")
            {
                tttk.SDT = sdt;
            }

            if (email != "")
            {
                tttk.Email = email;
            }

            db.ThongTinTKs.InsertOnSubmit(tttk);
            db.SubmitChanges();
        }
 partial void DeleteThongTinTK(ThongTinTK instance);
 partial void UpdateThongTinTK(ThongTinTK instance);
 partial void InsertThongTinTK(ThongTinTK instance);