TreeView控件递归初始化

头一次用treeview,把初始化贴上来,明天用所用表结构为父ID,ID和名称

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using Microsoft.Web.UI.WebControls;

namespace WebTreeview