using System.Text; 
using System.Collections; 
using System.Xml; 
using System.Web; 
using System; 
/// <summary> 
/// CreateTree 的摘要说明 
/// </summary> 
public class MenuTree 
{ 
int index = 0;//菜单栏目ID索引 
private ArrayList havePermission = new ArrayList(); 
private bool isVip = false; 
/// <summary> 
/// 登录用户所拥有的权限 
/// </summary> 
private ArrayList HavePermissions 
{ 
get { return havePermission; } 
set { havePermission = value; } 
} 
/// <summary> 
/// 登录用户是否是VIP 
/// </summary> 
private bool IsVip 
{ 
get { return isVip; } 
set { isVip = value; } 
} 
/// <summary> 
/// 登录用户所拥有的权限 是否为VIP用户 
/// </summary> 
/// <param name="havePermission"></param> 
/// <param name="isVip"></param> 
public MenuTree(ArrayList havePermission, bool isVip) 
{ 
this.HavePermissions = havePermission; 
this.IsVip = isVip; 
} 
/// <summary> 
/// 绑定树 
/// </summary> 
public string BindDataToTree() 
{ 
System.Xml.XmlDocument document = new System.Xml.XmlDataDocument(); 
document.Load(HttpContext.Current.Server.MapPath("MenuData.xml")); 
return CreateTreeHtml(document.DocumentElement, 0); 
} 
/// <summary> 
/// 创建栏目树 
/// </summary> 
/// <param name="document">xml节点</param> 
/// <param name="deep">树深度</param> 
private string CreateTreeHtml(System.Xml.XmlNode document, int deep) 
{ 
string nodeType = "Menu";//节点的类型，来生成子节点的CSS类型 
StringBuilder treeHtml = new StringBuilder(); 
foreach (System.Xml.XmlNode node in document.ChildNodes) 
{ 
string menuId = string.Empty; 
string treeNodeHtml = string.Empty; 
string nodeName = node.Name; 
string showName = GetAttributesValue(node.Attributes["Name"]);//显示栏目名 
string nodeId = GetAttributesValue(node.Attributes["Id"]);//栏目ID 
bool isExpand = GetAttributesValue(node.Attributes["IsExpand"]).ToLower().Trim() == "true" ? true : false;//是否展开 
string permissions = GetAttributesValue(node.Attributes["Permissions"]);//权限字串 
bool isOnlyVip = GetAttributesValue(node.Attributes["IsOnlyVip"]).ToLower().Trim() == "true" ? true : false;//是否只允许VIP访问 
bool isUnVip = GetAttributesValue(node.Attributes["IsUnVip"]).ToLower().Trim() == "true" ? true : false;//是否只准非VIP访问 
string eventScript = GetAttributesValue(node.Attributes["EventScript"]);//事件脚本 
int chlidNodesCount = node.ChildNodes.Count;//子节点数 
bool isPermissions = GetIsPermissions(permissions);//是否有权限 
if (!isPermissions) 
{ 
continue; //如果没有权限，不生成此节点 
} 
if (nodeName == "Module") 
{ 
if (isUnVip && IsVip) 
{ 
continue;//如果为VIP会员 设为不允许访问子栏目 
} 
menuId = GetMenuId(nodeId); 
treeHtml.AppendFormat("<div class='Module' id='Menu{0}' onclick='DoNodes(this);{1}' onselectstart='return false;'>", menuId, eventScript); 
treeHtml.Append(" <img src='/images/sideMenuIcon.gif' /> 相关JS代码： 

最后效果 

此代码我觉得易放便扩展，只要稍改动一下代码就能使用在自己的项目中。