关于GridView绑定

------------------前台GridView的页面---------------------------
<asp:GridView ID="TbNewOrder" runat="server"
        AutoGenerateColumns="False"
        DataKeyNames="F_ID"       
        EmptyDataText="没有可显示的数据记录。"
        OnSelectedIndexChanged="TbNewOrder_SelectedIndexChanged"
        width="100%" SkinID="ShopCarGridView" OnRowDataBound="TbNewOrder_RowDataBound">
        <EmptyDataTemplate>
            　<div style="color:Red; text-align:center; height:50px;">订单不存在或无权查询</div>
        </EmptyDataTemplate>
        <Columns>          
           <asp:TemplateField HeaderText="订单详情">               
                <ItemTemplate>
                   <a href='Detail.aspx?id=<%# Eval("F_ID") %>' title="查看订单详情">订单详情</a>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:BoundField DataField="F_OrderNo" HeaderText="订单号" SortExpression="F_OrderNo" /> 
              <asp:TemplateField HeaderText="下单日期">               
                <ItemTemplate>
                    <%# tl.FormatDate(Eval("F_InputDate").ToString(),"yyyy-mm-dd") %>
                </ItemTemplate>
            </asp:TemplateField>             
            <asp:TemplateField HeaderText="订单总额">               
                <ItemTemplate>
                    <%# Eval("F_TotalMoney", "{0:c}") %>
                </ItemTemplate>
            </asp:TemplateField>
                         
            <asp:BoundField DataField="F_StatusName" HeaderText="订单状态" />
           
             <asp:TemplateField HeaderText="操作">               
                <ItemTemplate>                  
                    <asp:HyperLink ID="lnkDelOrder" runat="server" ><span style="color:red">删除</span></asp:HyperLink>
                    <asp:HiddenField ID="hdStatus" runat="server" Value='<%# Eval("F_Status") %>'/>
                    <asp:HiddenField ID="hdId" runat="server" Value='<%# Eval("F_ID") %>'/>
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView> 

------------后台cs文件---------------------

using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;
using CNTVS.TOOLS.SQLDB;
using CNTVS.TOOLS.COMM;

public partial class Users_Order : System.Web.UI.Page
{
    DataBase db = new DataBase();
    protected Tools tl = new Tools();
    SqlConnection conn = null;

       protected void Page_Load(object sender, EventArgs e)
    {
         myBindData();
    }

    protected void myBindData()
    {
        conn = db.GetConn();
        SqlDataReader dr = db.RunSql("select * from V_Order", conn);
        this.TbNewOrder.DataSource = dr;
        this.TbNewOrder.DataBind();
     }
}