public static SDVT CreateSDVT(string ma_DVT, string ten_DVT)
 {
     SDVT sDVT = new SDVT();
     sDVT.Ma_DVT = ma_DVT;
     sDVT.Ten_DVT = ten_DVT;
     return sDVT;
 }
 public void AddToSDVTs(SDVT sDVT)
 {
     base.AddObject("SDVTs", sDVT);
 }