SO301000页面对话框网格无法添加多条订单记录问题

已实现功能 #

• 可拉取当前客户的所有订单
• 点击操作按钮可正常打开/关闭对话框
• 可将单条订单添加至对话框内的网格

未解决问题 #

• 无法向网格中添加多条订单，手动添加也无效果，且网格始终显示同一条订单（仅需展示订单信息，无需编辑）

相关代码 #

public class SOOrderEntry_Extension : PXGraphExtension<SOOrderEntry>
{
    public PXFilter<MSCustomerOrderDac> MSCustomerViewForm;
    public PXFilter<MSCustomerOrderDac> MSCustomerOrderViews; //Issue.

    public PXAction<SOOrder> ViewCustomerOrders;
    [PXUIField(DisplayName = "View Customer", MapEnableRights = PXCacheRights.Select, MapViewRights = PXCacheRights.Select)]
    [PXButton(Category = "Other")]
    [PXUIEnabled(typeof(Where<SOOrder.customerID.IsNotNull>))]
    protected virtual IEnumerable viewCustomerOrders(PXAdapter adapter)
    {
        MSCustomerOrderViews.AllowInsert=true;

        PXSelectBase<SOOrder> orders =
                new PXSelectReadonly<SOOrder,
                Where<SOOrder.customerID, Equal<Current<SOOrder.customerID>>>>(Base);
        int linenumber = 0;

         foreach (SOOrder order in orders.Select())
         {
            MSCustomerOrderDac newOrder = new MSCustomerOrderDac();
            newOrder.OrderNumber = order.OrderNbr;
            newOrder.LineNbr = linenumber++;
            newOrder = MSCustomerOrderViews.Insert(newOrder);
         }

        if (MSCustomerViewForm.AskExt(true) != WebDialogResult.OK) //need this to show the form
        {}
        
        return adapter.Get();
    }

    [PXVirtual]
    [Serializable]
    public class MSCustomerOrderDac : IBqlTable
    {
        #region OrderNumber 
        [PXString]
        [PXUIField(DisplayName = "Order Number")]
        public virtual String OrderNumber { get; set; }
        public abstract class orderNumber  : PX.Data.BQL.BqlString.Field<orderNumber> { }
        #endregion

        [PXInt(IsKey = true)]
        public virtual Int32? LineNbr { get; set; }
        public abstract class lineNbr : PX.Data.BQL.BqlInt.Field<lineNbr> { }
    }
}

已尝试跳出循环手动添加多条记录，但无效果；也曾参考过社区相关帖子，但问题场景不同。

内容的提问来源于stack exchange，提问作者Shoonly