我的详细信息视图没有更新？

Question

请告诉我为什么在使用以下代码更新我的详细信息视图时没有任何反应

 protected void newOrderDetailsView_ItemUpdating(object sender, DetailsViewUpdateEventArgs e)
    {

        TextBox txtNote = (TextBox)newOrderDetailsView.FindControl("txtNote");
        TextBox txtOrderDate = (TextBox)newOrderDetailsView.FindControl("txtOrderDate");
        TextBox txtDueDate = (TextBox)newOrderDetailsView.FindControl("txtDueDate");
        TextBox txtCustPO = (TextBox)newOrderDetailsView.FindControl("txtCustPO");
        TextBox txtContact = (TextBox)newOrderDetailsView.FindControl("txtContact");

        string Query = "Update Orders Set note='" + txtNote.Text + "' ,orderDate =CAST('" + txtDueDate + "'AS DATETIME) ,dueDate = CAST('" + txtDueDate + "'AS DATETIME) ,customerPurchaseOrder='" + txtCustPO.Text + "',contact='" + txtContact.Text + "' where orderId =" + ParentOrder;
        ExecuteQuery(Query);

        StatusLbl.Text = "Order Updated";
    }

        private void ExecuteQuery(string Query)
    {
        try
        {
            SqlConnection con = DataAccess.Connection.GetDBConnection();
            SqlCommand cmd = new SqlCommand(Query, con);
            cmd.ExecuteNonQuery();
            con.Close();
        }
        catch (Exception) { }
    }

当我按下更新按钮时，我实际放入事件处理程序的消息正在显示但是没有更新发生

编辑：所以我试图直接输入值并且它有效并且更新是成功的，...我在这里缺少什么？请帮助