DataGrid 嵌套应用-优快云博客

后台代码：
_index = new FNMS.WebHelper.index(base.UserName,base.Company);
            DataSet  myDs=_index.ClassListInfo("class_list","info_list");
            myDs.EnforceConstraints = false;
            //定义父列 
            DataColumn Parent=new DataColumn();         
            Parent=myDs.Tables["class_list"].Columns["class_id"];
            //定义子列 
            DataColumn Child  =myDs.Tables["info_list"].Columns["class_f_id"];  
            //建立关联列 
            DataRelation dr=new DataRelation("my_service",Parent,Child);
            //对数据集进行添加关系 
            myDs.Relations.Add(dr);
            //设置数据源,别忘了对嵌套的datalist设置数据源 
            this.dgClassList.DataSource=myDs.Tables["class_list"].DefaultView;
            this.dgClassList.DataBind();

ＨＴＭＬ代码：

<asp:datagrid id="dgClassList" runat="server" ShowHeader="False" AutoGenerateColumns="False" Width="98%">
                            <Columns>
                                <asp:TemplateColumn>
                                    <ItemTemplate>
                                        <TABLE cellSpacing="0" cellPadding="0" width="100%" frame="void">
                                            <TR>
                                                <TD width="100%"><%# DataBinder.Eval(Container,"DataItem.Class_Name") %></TD>
                                            </TR>
                                            <TR>
                                                <TD width="100%">
                                                    <asp:DataGrid id=dgInfoList AutoGenerateColumns="False" CellPadding="0" Width="100%" ShowHeader="False" DataKeyField="class_id" DataSource='<%# ((System.Data.DataRowView)(Container.DataItem)).CreateChildView("my_service") %>' Runat="server">
                                                        <Columns>
                                                            <asp:BoundColumn Visible="False"  DataField="Class_id"></asp:BoundColumn>
                                                            <asp:TemplateColumn>
                                                                <ItemTemplate>
                                                                    <a href='<%# "default.aspx?classid="+DataBinder.Eval(Container,"DataItem.Class_ID") %>'><%# DataBinder.Eval(Container,"DataItem.Class_Name") %></a>
                                                                </ItemTemplate>
                                                            </asp:TemplateColumn>
                                                            <asp:BoundColumn DataField="topic_count"></asp:BoundColumn>
                                                            <asp:BoundColumn DataField="reply_count"></asp:BoundColumn>
                                                            <asp:BoundColumn DataField="true_name"></asp:BoundColumn>
                                                        </Columns>
                                                    </asp:DataGrid>