Question

我需要您的帮助以下代码。下面的代码假设用户在Orders表中没有任何记录向他显示UsOrderpanel和UsOrderlbl消息，如果他已经有，那么它将向他显示Usorderspan但实际上代码无论如何用户在订单表中是否有订单向他显示Usorderspan，该面板应仅在用户有记录时显示

protected void MyordersLinkBtn_Click(object sender, EventArgs e)
    {

        if (Session["UsrNme"] != null)
        {
            using (SqlConnection UsOrderCon = new SqlConnection(sc))
            {
                UsOrderCon.Open();
                string chksUsOrderstring = "Select count (*) from Orders where UID=@chkUID";
                SqlCommand ChkUsOrderCMD = new SqlCommand(chksUsOrderstring, UsOrderCon);
                ChkUsOrderCMD.Parameters.AddWithValue("@chkUID", Payexictlbl.Text);
                //Check if orderId exists in db and if not then show the message
                if (!(Convert.ToInt32(ChkUsOrderCMD.ExecuteScalar()) > 0))
                {

                    Usorderspan.Visible = true;
                    UsOrderpanel.Visible = false;
                    SqlDataAdapter UsOrderADPA = new SqlDataAdapter("SELECT [OrderNo], [UID], [SubDate], [EndSubDate], [Amount], [Product], [payntmeth] FROM [Orders] WHERE  [UID] = @uSer ", sc);
                    var Userss = Session["UsrNme"];
                    UsOrderADPA.SelectCommand.Parameters.AddWithValue("@uSer", Userss);
                    DataSet UsOrderDST = new DataSet();

                    UsOrderADPA.Fill(UsOrderDST);

                    UsrOrdersCompLstViw.DataSource = UsOrderDST.Tables[0];
                    UsrOrdersCompLstViw.DataBind();

                }

                else
                {
                    UsOrderpanel.Visible = true;
                    UsOrderlbl.Text = "You dont have any orders";
                }
            }

        }
        MultiView1.ActiveViewIndex = 8;

    }

    }

Answer 1

更好地阅读你的问题，我认为你的情况反过来了。你说如果他没有Orders中的记录，你想向他展示UsOrderpanel和UsOrderlbl。如果他有，请告诉他Usorderspan。

查看您的代码，您可以这样做：如果他没有Orders中的记录，那么

Usorderspan.Visible = true;
UsOrderpanel.Visible = false;
...

如果他有记录你

UsOrderpanel.Visible = true;
UsOrderlbl.Text = "You dont have any orders";

您应该将条件改为

if (Convert.ToInt32(ChkUsOrderCMD.ExecuteScalar()) > 0)

检查可用性记录代码不起作用

1 个答案: