private void detach_DeptStks(DeptStk entity)
 {
     this.SendPropertyChanging("DeptStks");
     entity.PrdMst = null;
 }
 private void attach_DeptStks(DeptStk entity)
 {
     this.SendPropertyChanging("DeptStks");
     entity.Prd = this;
 }
 partial void UpdateDeptStk(DeptStk instance);
 partial void DeleteDeptStk(DeptStk instance);
 partial void InsertDeptStk(DeptStk instance);