public string LayGiaDichVuKhac(int madv)
{
string sql = "Select DonGia from DichVu where MaDV = " + madv + "and LoaiDV = 0";
return(dp.ExecuteScalar_(sql));
}
public string LayTenNhanVien(int manv)
{
string sql = "Select TenNV from NhanVien where MaNV = " + manv + "";
return(dp.ExecuteScalar_(sql));
}