数据在绑定时，内层DataList获取外层Gridview的某列值？

Question

this.GridView1.FindControl("ControlID");或者通过JQuery查看客户端id在前台获得值。

Answer 1

前台gridview <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnRowCreated="GridView1_RowCreated"
                OnRowDataBound="GridView1_RowDataBound" OnSorting="GridView1_Sorting" DataKeyNames="id">
                <Columns>
                    <asp:TemplateField HeaderText="序号" SortExpression="Id">
                        <ItemTemplate>
                            <%# (this.AspNetPager1.CurrentPageIndex - 1) * this.AspNetPager1.PageSize + Container.DataItemIndex + 1%>
                        </ItemTemplate>
                        <ItemStyle Wrap="True" />
                        <HeaderStyle Wrap="False" />
                    </asp:TemplateField>
                    <asp:TemplateField>
                        <HeaderTemplate>
                            学号</HeaderTemplate>
                        <ItemTemplate>
                            <asp:Label ID="lblxh" runat="server" Text='<%#Eval("StuNo") %>'></asp:Label></ItemTemplate>
                    </asp:TemplateField>
                    <asp:BoundField DataField="StuName" HeaderText="姓名" SortExpression="StuName" />
                    <asp:BoundField HeaderText="课程名称" SortExpression="Gender" DataField="LessonName" />
                    <asp:BoundField DataField="ClassName" HeaderText="班级名称" SortExpression="ClassName" />
                    <asp:BoundField HeaderText="录入次数" />
                    <asp:TemplateField HeaderText="成绩类型"></asp:TemplateField>
                    <asp:TemplateField HeaderText="考核成绩">
                        <ItemTemplate>
                            <asp:DataList ID="dtlist1" runat="server" RepeatDirection="Horizontal" OnItemDataBound="dtlist1_ItemDataBound">
                                <ItemTemplate>
                                    <table border="0" cellspacing="0" cellpadding="0" width="99%"">
                                        <tbody>
                                            <tr>
                                                <td>
                                                    <asp:Label ID="lblxm" runat="server" Text='<%#Eval("Contents") %>'></asp:Label>
                                                </td>
                                            </tr>
                                            <tr>
                                                <td valign="top" align="left">
                                                    <asp:TextBox ID="txtboxfenshu" runat="server" Width="50px"></asp:TextBox>
                                                </td>
                                            </tr>
                                        </tbody>
                                    </table>
                                </ItemTemplate>
                            </asp:DataList>
                        </ItemTemplate>
                    </asp:TemplateField>
                </Columns>
            </asp:GridView>后台cs
 protected void dtlist1_ItemDataBound(object sender, DataListItemEventArgs e)
        {
            string whicht = "";
            string whichid = "";
            string xuehao = ((Label)this.GridView1.FindControl("lblxh")).Text;
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
                string totalid = "txtboxfenshu";
                ((TextBox)e.Item.FindControl("txtboxfenshu")).Visible = true;
                whicht = ((TextBox)e.Item.FindControl("txtboxfenshu")).ClientID.ToString();
                whichid = "txtboxfenshu";
                ((TextBox)e.Item.FindControl("txtboxfenshu")).Attributes.Add("onfocusout", "WriteData('" + e.Item.ItemIndex + "','" + whicht + "','" + whichid + "','" + totalid + "',this)");
            }
        }但是这么写这一句会报错，    string xuehao = ((Label)this.GridView1.FindControl("lblxh")).Text;  提示未将对象引用设置到对象的实例。说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。 异常详细信息: System.NullReferenceException: 未将对象引用设置到对象的实例。源错误: 
行 494:            string whicht = "";
行 495:            string whichid = "";
行 496:            string xuehao = ((Label)this.GridView1.FindControl("lblxh")).Text;
行 497:            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
行 498:            {

Answer 2

目测应该一级一级的获取
((Label)this.GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text;

Answer 3

谢谢各位的支持   我的问题已解决   我在外层rowbound方法中  增加一列，在子层中取出就可以了

Answer 4

读一下10年前的asp.net教程。http://wenku.it168.com/d_000702238.shtml

Answer 5

内层的记录与外层记录一定有相关联的。
显示内层记录中的sql，就包含了外层记录的主键或是你想要的字段记录。