partial void DeleteDeptPoDet(DeptPoDet instance);
 partial void InsertDeptPoDet(DeptPoDet instance);
 partial void UpdateDeptPoDet(DeptPoDet instance);
 private void detach_DeptPoDets(DeptPoDet entity)
 {
     this.SendPropertyChanging("DeptPoDets");
     entity.Prd = null;
 }