partial void DeleteDeptMng(DeptMng instance);
 partial void UpdateDeptMng(DeptMng instance);
 private void attach_DeptMngs(DeptMng entity)
 {
     this.SendPropertyChanging("DeptMngs");
     entity.Dept = this;
 }
 private void detach_DeptMngs(DeptMng entity)
 {
     this.SendPropertyChanging("DeptMngs");
     entity.Dept = null;
 }
 partial void InsertDeptMng(DeptMng instance);