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前臺代碼:
<%@ Import Namespace="System.Data" %>
<asp:DataList ID="Parent" runat="server" Height="134px" Width="133px" OnInit="Parent_Init">
    <ItemTemplate>
        <asp:Label ID="Label1" runat="server" Text='<%# Eval("QuestionContent") %>' Font-Bold="True" ForeColor="Red"></asp:Label>
        <asp:DataList ID="Child" runat="server" datasource='<%# ((DataRowView)Container.DataItem).Row.GetChildRows("Myrelations") %>' ForeColor="Green">
            <ItemTemplate>
                <asp:Label ID="Label1" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "[\"AnswerContent\"]")%>'></asp:Label>
            </ItemTemplate>
        </asp:DataList>
    </ItemTemplate>
</asp:DataList>

注意:紅色部分為子DataList，"Myrelations"為DataList間的關連名稱

後臺代碼:
String connStr = ConfigurationManager.ConnectionStrings["ResearchProjectConnectionString"].ConnectionString;  //讀取WEB.CONFIG連接字串
SqlConnection conn = new SqlConnection(connStr);
SqlDataAdapter SqlDa1 = new SqlDataAdapter("select *  from Question", conn);//父DataList
SqlDataAdapter SqlDa2 = new SqlDataAdapter("select * from Answer", conn);//子DataList
DataSet ds = new DataSet();
SqlDa1.Fill(ds,"Question");
SqlDa2.Fill(ds,"Answer");
ds.Relations.Add("Myrelations", ds.Tables["Question"].Columns["QuestionOrder"], ds.Tables["Answer"].Columns["QuestionOrder"]);  //建立關聯
Parent.DataSource = ds.Tables["Question"]; //父DataList

Page.DataBind();
conn.Close();