asp.net下xml当作导航数据源实现动态权限

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;
using System.IO;
namespace Root
{
public partial class WebUserControl1 : System.Web.UI.UserControl
{
XmlDocument x = new XmlDocument();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
XMLOperator();
}
}

/// <summary>
/// XML操作
/// </summary>
private void XMLOperator()
{
XMLLoad();
string str = "<table><tr><td>";
foreach (XmlNode xn in x.ChildNodes)
{
foreach (XmlNode xn1 in xn.ChildNodes)
{
str += xn1.Attributes["text"].Value;
str += "</td></tr>";
foreach (XmlNode xn2 in xn1.ChildNodes)
{
str += "<tr><td>";
str += xn2.Attributes["text"].Value;
str += "</td></tr>";
}
}
}
str += "</table>";
Response.Write(str);
}
/// <summary>
/// 加载XML文档
/// </summary>
private void XMLLoad()
{
x.Load(Server.MapPath("~/Left.xml"));
}

/// <summary>
/// 读取XML内容
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
private DataSet ReadXml(string path)
{
DataSet ds = new DataSet();
FileStream fs = null;
StreamReader reader = null;
try
{
fs = new FileStream(path, FileMode.Open, FileAccess.Read);
reader = new StreamReader(fs, System.Text.Encoding.UTF8);
ds.ReadXml(reader);
return ds;
}
finally
{
fs.Close();
reader.Close();
}
}
}
}

<?xml version="1.0" encoding="utf-8" ?>
<menu>
<submenu id="1" text="校区基本信息">
<item text="校区管理" href="SchoolBaseSet/SchoolManagement/SchoolInformation.aspx" href="SchoolBaseSet/SchoolManagement/SchoolInformation.aspx" roles="超级管理员,系统管理员,院校长"></item>
<item text="班级管理" href="SchoolBaseSet/ClassManagement/ClassInformation.aspx" href="SchoolBaseSet/ClassManagement/ClassInformation.aspx" roles="超级管理员,系统管理员,班主任,院校长,教学主管,教学主任,校区考试专员" ></item>
<item text="学生信息管理" href="SchoolBaseSet/StudentInformation/StudentInformation.aspx" href="SchoolBaseSet/StudentInformation/StudentInformation.aspx" roles="超级管理员,系统管理员,院校长,班主任,教学主管,教学主任" ></item>
<item text="用户信息管理" href="SchoolBaseSet/UserManagement/UserInformation.aspx" href="SchoolBaseSet/UserManagement/UserInformation.aspx" roles="超级管理员,系统管理员,院校长,教学主管,教学主任"></item>
<item text="教师审批管理" href="SchoolBaseSet/TeacherPass/TeacherPass.aspx" href="SchoolBaseSet/TeacherPass/TeacherPass.aspx" roles="教学主管,教学主任,校区考试专员"></item>
<item text="切换教师角色" href="SchoolBaseSet/TeacherPass/RolesChange.aspx" href="SchoolBaseSet/TeacherPass/RolesChange.aspx" roles="校区考试专员"></item>
</submenu>
<submenu id="2" text="学生成绩管理">
<item text="成绩综合管理" href="StudentGradeManagement/StudentGradedescirption/StudentGradeAll.aspx" href="StudentGradeManagement/StudentGradedescirption/StudentGradeAll.aspx" roles="超级管理员,系统管理员,院校长,班主任,教学主管,教学主任" ></item>
<item text="学生成绩管理" href="StudentGradeManagement/StudentGradedescirption/StudentInformation.aspx" href="StudentGradeManagement/StudentGradedescirption/StudentInformation.aspx" roles="超级管理员,系统管理员,院校长,班主任,教学主管,教学主任" ></item>
</submenu>
<submenu id="3" text="数据字典设置">
<item text="专业管理" href="DataDictionary/Specialty/Specialties.aspx" href="DataDictionary/Specialty/Specialties.aspx" roles="超级管理员,系统管理员" ></item>
<item text="课程管理" href="DataDictionary/Course/Courses.aspx" href="DataDictionary/Course/Courses.aspx" roles="超级管理员,系统管理员" ></item>
<item text="专业课程管理" href="DataDictionary/CourseInSpecialty/CouserInSpecialty.aspx" href="DataDictionary/CourseInSpecialty/CouserInSpecialty.aspx" roles="超级管理员,系统管理员" ></item>
<item text="角色管理" href="DataDictionary/Rolse/Roles.aspx" href="DataDictionary/Rolse/Roles.aspx" roles="超级管理员"></item>
<item text="管理员管理" href="DataDictionary/AdminUser/AdministratorUser.aspx" href="DataDictionary/AdminUser/AdministratorUser.aspx" roles="超级管理员" ></item>
<item text="Logo图标管理" href="DataDictionary/Logo/EditLogo.aspx" href="DataDictionary/Logo/EditLogo.aspx" roles="超级管理员,系统管理员,教学主管,教学主任" ></item>
<item text="学号长度设置" href="DataDictionary/StudentCodeSet/StudentCodeLenghtInf.aspx" href="DataDictionary/StudentCodeSet/StudentCodeLenghtInf.aspx" roles="超级管理员,系统管理员" ></item>
<item text="恢复设置管理" href="DataDictionary/RemoveSchool/RemoveAllSchool.aspx" href="DataDictionary/RemoveSchool/RemoveAllSchool.aspx" roles="超级管理员" ></item>
</submenu>
<submenu id="4" text="考试操作管理">
<item text="考试类型管理" href="ExamManagement/ExamType/ExamTypeInformation.aspx" href="ExamManagement/ExamType/ExamTypeInformation.aspx" roles="超级管理员,系统管理员" ></item>
<item text="试卷模板管理" href="ExamManagement/ExamTemplate/ExamTemplateInformation.aspx" href="ExamManagement/ExamTemplate/ExamTemplateInformation.aspx" roles="超级管理员,系统管理员" ></item>
<item text="试题类型管理" href="ExamManagement/ExaminationType/ExaminationInformation.aspx" href="ExamManagement/ExaminationType/ExaminationInformation.aspx" roles="超级管理员,系统管理员" ></item>
<item text="试题题目管理" href="ExamManagement/ExamQuestion/QuestionInformation.aspx" href="ExamManagement/ExamQuestion/QuestionInformation.aspx" roles="超级管理员,系统管理员" ></item>
<item text="考试申请管理" href="ExamManagement/ExamApplication/ExamApplicationInformation.aspx" href="ExamManagement/ExamApplication/ExamApplicationInformation.aspx" roles="超级管理员,系统管理员" ></item>
<item text="试卷下载管理" href="ExamManagement/ExamDownLoad/ExamDownLoadInformation.aspx" href="ExamManagement/ExamDownLoad/ExamDownLoadInformation.aspx" roles="超级管理员,系统管理员" ></item>
<item text="试卷删除管理" href="ExamManagement/ExamPaperDelete/ExamPaperClear.aspx" href="ExamManagement/ExamPaperDelete/ExamPaperClear.aspx" roles="超级管理员,系统管理员" ></item>
</submenu>
<submenu id="5" text="报表信息管理">
<item text="缓考补考报表" href="ReportInformation/StudentExamState/StudentExamState.aspx" href="ReportInformation/StudentExamState/StudentExamState.aspx" roles="超级管理员,系统管理员,院校长,班主任,教学主管,教学主任,校区考试专员" ></item>
<item text="校区考试报表" href="ReportInformation/ExamGrade/ExamGradeReport.aspx" href="ReportInformation/ExamGrade/ExamGradeReport.aspx" roles="超级管理员,系统管理员,院校长,教学主管,教学主任,校区考试专员" ></item>
<item text="班级课程报表" href="ReportInformation/StudentExamByClass/StudentExamReport.aspx" href="ReportInformation/StudentExamByClass/StudentExamReport.aspx" roles="超级管理员,系统管理员,院校长,班主任,教学主管,教学主任,校区考试专员" ></item>
</submenu>
<submenu id="6" text="日志操作管理">
<item text="登陆日志管理" href="LoginManagement/LogLogins.aspx" href="LoginManagement/LogLogins.aspx" roles="超级管理员" ></item>
<item text="操作日志管理" href="LoginManagement/LogOpeations.aspx" href="LoginManagement/LogOpeations.aspx" roles="超级管理员" ></item>
<item text="日志导出" href="LoginManagement/ErportLog.aspx" href="LoginManagement/ErportLog.aspx" roles="超级管理员" >
</item>
</submenu>
<submenu id="7" text="个人信息管理">
<item text="个人资料修改" href="PersonalManagement/PersonalManagement.aspx" href="PersonalManagement/PersonalManagement.aspx" roles="超级管理员,系统管理员,院校长,班主任,教学主管,教学主任,校区考试专员" ></item>
</submenu>
</menu>