public static bool ThemPhong(DanhMucPhongDTO dmDTO)
 {
     SqlConnection con = DataProvider.ConnectionString();
     string strsql = "insert into Phong (MaPhong, MaLP, TinhTrang, GhiChu)"
     + " values(" + dmDTO.MaPhong + "," + dmDTO.LoaiPhong + ",'"
     + dmDTO.TinhTrang + "','" + dmDTO.GhiChu + "')";
     return DataProvider.ExecuteNonQuery(strsql, con);
 }
 public static bool SuaPhong(DanhMucPhongDTO dmDTO)
 {
     SqlConnection con = DataProvider.ConnectionString();
     string strsql = "update Phong set "
     + "MaLP = " + dmDTO.LoaiPhong
     + ",TinhTrang = '" + dmDTO.TinhTrang
     + "',GhiChu = '" + dmDTO.GhiChu
     + "' where MaPhong = " + dmDTO.MaPhong;
     return DataProvider.ExecuteNonQuery(strsql, con);
 }
 public static DataSet LayThongTinPhong(DanhMucPhongDTO dmDTO)
 {
     SqlConnection con = DataProvider.ConnectionString();
     string strsql = "select * from Phong where MaPhong = " + dmDTO.MaPhong;
     return DataProvider.GetDataSet(strsql, con);
 }
 public static string LayTenPhong(DanhMucPhongDTO dmDTO)
 {
     SqlConnection con = DataProvider.ConnectionString();
     string strsql = "select TenLP from LoaiPhong where MaLP = " + dmDTO.LoaiPhong;
     return DataProvider.ExecuteScalar(strsql, con);
 }
 public static bool ThemPhong(DanhMucPhongDTO dmDTO)
 {
     return DanhMucPhongDAO.ThemPhong(dmDTO);
 }
 public static bool SuaPhong(DanhMucPhongDTO dmDTO)
 {
     return DanhMucPhongDAO.SuaPhong(dmDTO);
 }
 public static DataSet LayThongTinPhong(DanhMucPhongDTO dmDTO)
 {
     return DanhMucPhongDAO.LayThongTinPhong(dmDTO);
 }
 public static string LayTenPhong(DanhMucPhongDTO dmDTO)
 {
     return DanhMucPhongDAO.LayTenPhong(dmDTO);
 }