private void detach_PrdMsts(PrdMst entity)
 {
     this.SendPropertyChanging("PrdMsts");
     entity.PrdTyp = null;
 }
 private void attach_PrdMsts(PrdMst entity)
 {
     this.SendPropertyChanging("PrdMsts");
     entity.PrdTyp = this;
 }
 partial void UpdatePrdMst(PrdMst instance);
 partial void DeletePrdMst(PrdMst instance);
 partial void InsertPrdMst(PrdMst instance);