刚开始接触TreeView控件的时候，感觉很苦恼，因为要像下面的方式来填充它：

using System;using System.Collections.Generic;using System.Configuration;using System.Data;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;using System.Data.SqlClient;public partial class ascx_ReleaseMenuManage : System.Web.UI.UserControl{    protected void Page_Load(object sender, EventArgs e)    {        if (!IsPostBack)        {            Dispaly();            GetParentNodes();                   }    }    private void Dispaly()    {        IList
     
       parents = GetData("0");        foreach (Node parent in parents)        {            TreeNode parentnode = this.CreateTreeNode(parent.Name, parent.ID, parent.Url);            CreateChildNode(parent.ID, parentnode);            TreeView1.Nodes.Add(parentnode);        }           }    private TreeNode CreateTreeNode(string funname, string id, string url)    {        TreeNode newNode = new TreeNode();        newNode.Text = funname;        newNode.Value = id;        //newNode.NavigateUrl = ResolveUrl(url.Trim());        return newNode;    }    private void CreateChildNode(string nodeid, TreeNode parentnode)    {        IList
      
        children = GetData(nodeid);        foreach (Node child in children)        {            TreeNode childnode = this.CreateTreeNode(child.Name, child.ID, child.Url);            CreateChildNode(child.ID, childnode);            AddTree(parentnode, childnode);        }    }    private void AddTree(TreeNode fathernode, TreeNode chilenode)    {        fathernode.ChildNodes.Add(chilenode);    }    private IList
       
         GetData(string id)    {        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["constr"].ToString());        SqlCommand cmd = new SqlCommand("select funid,funname,funurl from releasefuninfo where fatherid=@id", con);        cmd.Parameters.AddWithValue("id", id);        con.Open();        SqlDataReader reader = cmd.ExecuteReader();        List
        
          nodes = new List
         
          ();        while (reader.Read())        {            Node n = new Node();            n.ID = reader["funid"].ToString();            n.Name = reader["funname"].ToString();            n.Url = reader["funurl"].ToString();            nodes.Add(n);        }        return nodes;    }    protected void TreeView1_SelectedNodeChanged1(object sender, EventArgs e)    {              string current = ((TreeView)sender).SelectedNode.Value;        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["constr"].ToString());        SqlCommand cmd = new SqlCommand("select funname,funurl,displayid from releasefuninfo where funid=@id", con);        cmd.Parameters.AddWithValue("id", current);        con.Open();        SqlDataReader reader = cmd.ExecuteReader();        while (reader.Read())        {            txtMenu_Name.Text = reader["funname"].ToString();            txtMenu_http.Text = reader["funurl"].ToString();            if (reader["displayid"].ToString() == "1")            {                chkMenu_Lock.Checked = true;            }            else            {                chkMenu_Lock.Checked = false;            }        }    }    private void GetParentNodes()    {              SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["constr"].ToString());        SqlCommand cmd = new SqlCommand("select funid, funname from releasefuninfo where fatherid=0", con);             con.Open();        SqlDataReader reader = cmd.ExecuteReader();               while (reader.Read())        {            ListItem  item=new ListItem();            item.Text = reader["funname"].ToString();            item.Value = reader["funid"].ToString();            txtMenu_FaterID.Items.Add(item);        }        con.Close();    }    public class Node    {        public string ID { get; set; }        public string Name { get; set; }        public string Url { get; set; }    }}
         
        
       
      
     

嘿嘿 ，最近终于找到一个简洁的方式来填充它了，很是开心，代码如下：

using System;using System.Collections;using System.Configuration;using System.Data;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;using System.Data.SqlClient;public partial class TreeViewTest : System.Web.UI.Page{    DataSet ds ;    protected void Page_Load(object sender, EventArgs e)    {        if (!IsPostBack)        {            ds = new DataSet();           SqlConnection con = new SqlConnection(SqlHelp.Constr);        SqlDataAdapter sda = new SqlDataAdapter("select * from releasefuninfo", con);        sda.Fill(ds);             GridView1.DataSource = ds.Tables[0].DefaultView;        GridView1.DataBind();       AddNode(TreeView1.Nodes, "0");        }                  }    private void AddNode(TreeNodeCollection nodes, string id)    {        DataView dv = new DataView();        dv.Table = ds.Tables[0];        dv.RowFilter = "fatherid=" + "'" + id + "'";        TreeNode tn;        foreach (DataRowView v in dv)        {            tn = new TreeNode();            tn.Value = v["funid"].ToString();            tn.Text = v["funname"].ToString();            tn.NavigateUrl = ResolveUrl( v["funurl"].ToString());            nodes.Add(tn);            AddNode(tn.ChildNodes, tn.Value);        }    }}

类似的用法可以用子Menu控件上；