private ThemTaiKhoanNguoiDung LayThongTinYTa()
        {
            ThemTaiKhoanNguoiDung ttk1 = new ThemTaiKhoanNguoiDung();

            ttk1.MaYTa = cboMaYTa.SelectedValue.ToString();
            ttk1.HoYTa = txtHoYTa.Text;
            ttk1.TenYTa = txtTenYTa.Text;
            ttk1.MaNhomYT = cboMaNhomYT.SelectedValue.ToString();
            ttk1.TenNhomYT = txtTenNhomYT.Text;
            ttk1.UsernameYT = txtTaiKhoanYT.Text;
            ttk1.PasswordYT = txtMatKhauYT.Text;

            return ttk1;
        }
        //Ham lay thong tin tai khoan bac si
        private ThemTaiKhoanNguoiDung LayThongTinNhanVien()
        {
            ThemTaiKhoanNguoiDung ttk2 = new ThemTaiKhoanNguoiDung();

            ttk2.MaNhanVien = cboMaNhanVien.SelectedValue.ToString();
            ttk2.HoNhanVien = txtHoNhanVien.Text;
            ttk2.TenNhanVien = txtTenNhanVien.Text;
            ttk2.MaNhomNV = cboMaNhomNV.SelectedValue.ToString();
            ttk2.TenNhomNV = txtTenNhomNV.Text;
            ttk2.UsernameNV = txtTaiKhoanNV.Text;
            ttk2.PasswordNV = txtMatKhauNV.Text;

            return ttk2;
        }
        public bool ThemTaiKhoanYTa(ThemTaiKhoanNguoiDung TTK)
        {
            TTK.PasswordYT = Utilities.MaHoaMD5(TTK.PasswordYT);
            string sql = string.Format("Insert into USERS (STT, MaNhom, Username, Password, Ho, Ten, MaNguoiDung)"
            + "values('{0}', '{1}', '{2}', '{3}', N'{4}', N'{5}', '{6}')", "0", TTK.MaNhomYT, TTK.UsernameYT,
            TTK.PasswordYT, TTK.HoYTa, TTK.TenYTa, TTK.MaYTa);

            if (conData.ExcuteQuery(sql))
                return true;
            return false;
        }
        //Ham lay thong tin tai khoan bac si
        private ThemTaiKhoanNguoiDung LayThongTinBacSi()
        {
            ThemTaiKhoanNguoiDung ttk = new ThemTaiKhoanNguoiDung();

            ttk.MaBacSi = cboMaBacSi.SelectedValue.ToString();
            ttk.HoBacSi = txtHoBacSi.Text;
            ttk.TenBacSi = txtTenBacSi.Text;
            ttk.MaNhomBS = cboMaNhomBS.SelectedValue.ToString();
            ttk.TenNhomBS = txtTenNhomBS.Text;
            ttk.UsernameBS = txtTaiKhoanBS.Text;
            ttk.PasswordBS = txtMatKhauBS.Text;

            return ttk;
        }
 public bool SuaDoiTaiKhoanYTa(ThemTaiKhoanNguoiDung ttk)
 {
     ttk.PasswordYT = Utilities.MaHoaMD5(ttk.PasswordYT);
     string sql = string.Format("Update USERS set Username = '******', Password = '******', Ho = N'{2}', Ten = N'{3}',"
     + " MaNhom = '{4}' where MaNguoiDung = '{5}'", ttk.UsernameYT, ttk.PasswordYT, ttk.HoYTa, ttk.TenYTa,
     ttk.MaNhomYT, ttk.MaYTa);
     if (conData.ExcuteQuery(sql))
         return true;
     return false;
 }