【】让gridview和detailview 联动效果。程序实现（前提条件主键只有一个字段）

注意，此图中的gridview有三个字段，但实际上应用的只有ddid这个字段。

 <asp:DetailsView runat="server"
    ID="DetailsView1"
    Height="221px"
    Width="458px"    
    AutoGenerateRows="False"
    DataKeyNames="ddid,spid,userid"
    ForeColor="#333333" GridLines="None"
    CellPadding="1" AllowPaging="True"
    AutoGenerateEditButton="True"

    AutoGenerateDeleteButton="True"

    AutoGenerateInsertButton="True" OnPageIndexChanging="DetailsView1_PageIndexChanging" >

    <FooterStyle ForeColor="White" Font-Bold="True" BackColor="#990000" />
    <CommandRowStyle Font-Bold="True" BackColor="#FFFFC0" />
    <RowStyle ForeColor="#333333" BackColor="#FFFBD6" />

    <PagerStyle ForeColor="#333333" HorizontalAlign="Center" BackColor="#FFCC66" />
    <Fields>
        <asp:BoundField DataField="ddid" HeaderText="ddid" ReadOnly="True" SortExpression="ddid" />
        <asp:BoundField DataField="spid" HeaderText="spid" ReadOnly="True" SortExpression="spid" />
        <asp:BoundField DataField="userid" HeaderText="userid" ReadOnly="True" SortExpression="userid" />
        <asp:BoundField DataField="spnum" HeaderText="spnum" SortExpression="spnum" />
        <asp:BoundField DataField="spmoney" HeaderText="spmoney" SortExpression="spmoney" />
       
    </Fields>

    <FieldHeaderStyle Font-Bold="True" />
    <HeaderStyle ForeColor="White" Font-Bold="True" BackColor="#990000" />
    <AlternatingRowStyle BackColor="White" />
   </asp:DetailsView>

 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource2" DataKeyNames="ddid,spid,userid" OnRowCommand="GridView1_RowCommand">
            <Columns>
                <asp:BoundField DataField="ddid" HeaderText="ddid" ReadOnly="True" SortExpression="ddid" />
                <asp:BoundField DataField="spid" HeaderText="spid" ReadOnly="True" SortExpression="spid" />
                <asp:BoundField DataField="userid" HeaderText="userid" ReadOnly="True" SortExpression="userid" />
                <asp:TemplateField ShowHeader="False">
                    <ItemTemplate>
                        <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="false" CommandName="select1"
                         CommandArgument='<%# Eval("ddid") %>'    Text="查看详细"></asp:LinkButton>
                    </ItemTemplate>                                              (响应rowcommand事件，并传参数)
                </asp:TemplateField>

 <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:lddbConnectionString %>"  SelectCommand="SELECT [ddid], [spid], [userid] FROM [dingdan]"></asp:SqlDataSource>

rowcommand事件代码

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "select1")
        {

            string strdetail = "select * from dingdan where dd>e.CommandArgument.ToString();//从上面同颜色的地区得到参数
            DataTable detail = sn.GiveSPNum(strdetail);// 从数据库中得到详细数据，并显示。
            DetailsView1.DataSource = detail;
            DetailsView1.DataBind();
        }
    }

【】控件可视化，使得detailview控件和gridview控件具有联动效果。

1，为gridview创建数据源。

2，添加gridview控件，制定其数据源，和datakeynames属性。

3，为detailview控件准备数据源。

如图：