ASP.NET:可以使用GridView创建层次结构吗？

using System.Data;
using System.Web.UI.WebControls;

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="ID" OnRowDataBound="GridView1_RowDataBound">
   <Columns>
        <asp:BoundField DataField="Name" HeaderText="Name" />
        <asp:BoundField DataField="Description" HeaderText="Description" />
        <asp:TemplateField HeaderText="SubItems">
            <ItemTemplate>
                <asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False" DataKeyNames="ID">
                   <Columns>
                        <asp:BoundField DataField="SubName" HeaderText="SubName" />
                        <asp:BoundField DataField="SubDescription" HeaderText="SubDescription" />
                    </Columns>
                </asp:GridView>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        DataTable dt = GetData();
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

private DataTable GetData()
{
    DataTable dt = new DataTable();
    // 在这里添加您的数据源，例如从数据库中获取数据
    return dt;
}

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        GridView GridView2 = (GridView)e.Row.FindControl("GridView2");
        DataRowView drv = (DataRowView)e.Row.DataItem;
        DataTable dt = GetSubData(drv["ID"].ToString());
        GridView2.DataSource = dt;
        GridView2.DataBind();
    }
}

private DataTable GetSubData(string id)
{
    DataTable dt = new DataTable();
    // 在这里添加您的子项数据源，例如从数据库中获取数据
    return dt;
}