C#修改文件夹权限

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

 
using System.DirectoryServices;
using System.Collections;
using System.Text.RegularExpressions;
using System.IO;
using System.Security.AccessControl;
using System.Data.SqlClient;
using System.Data.Sql;
 
using System.Data;
 
 
 

namespace ClassLibrary
{
    public class IISClass
    {
        #region UserName,Password,HostName的定义
        public static string HostName
        {
            get
            {
                return hostName;
            }
            set
            {
                hostName = value;
            }
        }
        public static string UserName
        {
            get
            {
                return userName;
            }
            set
            {
                userName = value;
            }
        }
        public static string Password
        {
            get
            {
                return password;
            }
            set
            {
                if (UserName.Length <= 1)
                {
                    throw new ArgumentException("还没有指定好用户名。请先指定用户名");
                }
                password = value;
            }
        }
        public static void RemoteConfig(string hostName, string userName, string password)
        {
            HostName = hostName;
            UserName = userName;
            Password = password;
        }
        private static string hostName = "localhost";
        private static string userName = "qf";
        private static string password = "qinfei";
        #endregion
        #region 根据路径构造Entry的方法
        /// <summary>
        /// 根据是否有用户名来判断是否是远程服务器。
        /// 然后再构造出不同的DirectoryEntry出来
        /// </summary>
        /// <param name="entPath">DirectoryEntry的路径</param>
        /// <returns>返回的是DirectoryEntry实例</returns>

        public static DirectoryEntry GetDirectoryEntry(string entPath)        

{           

 DirectoryEntry ent;   

         if (UserName == null)        

    {                

       ent = new DirectoryEntry(entPath);  

          }           

          else     

       {           

             ent = new DirectoryEntry(entPath, HostName + "\\" + UserName, Password, AuthenticationTypes.Secure);           

            //ent = new DirectoryEntry(entPath, UserName, Password, AuthenticationTypes.Secure);         

         }         

   return ent;    

    }      

  #endregion      

  #region 添加，删除网站的方法      

  public static void CreateNewWebSite(string hostIP, string portNum, string descOfWebSite, string commentOfWebSite, string webPath)   

     {          

  if (!EnsureNewSiteEnavaible(hostIP + portNum + descOfWebSite))       

     {          

      throw new ArgumentNullException("已经有了这样的网站了。" + Environment.NewLine + hostIP + portNum + descOfWebSite);       

     }         

   string entPath = String.Format("IIS://{0}/w3svc", HostName);    

        DirectoryEntry rootEntry = GetDirectoryEntry(entPath);//取得iis路径     

       string newSiteNum = GetNewWebSiteID(); //取得新网站ID     

       DirectoryEntry newSiteEntry = rootEntry.Children.Add(newSiteNum, "IIsWebServer"); //增加站点    

        newSiteEntry.CommitChanges();//保存对区域的更改(这里对站点的更改)       

     newSiteEntry.Properties["ServerBindings"].Add(":"+portNum+":");  //(hostIP + portNum + descOfWebSite);          

  newSiteEntry.Properties["ServerComment"].Value= commentOfWebSite ;          

  newSiteEntry.Properties["AccessRead"].Add(true); //增加 读取权限    

      //  newSiteEntry.Properties["AppFriendlyName"].Add("DefaultAppPool");      

    //  System.DirectoryServices.DirectoryEntry appPoolRoot = new System.DirectoryServices.DirectoryEntry(@"IIS://" + HostName + "/W3SVC/AppPools");   

      //   newSiteEntry.Properties["ApplicationProtection"].Value="vsdapMedium";         

   newSiteEntry.Properties["DefaultDoc"][0] = "Default.aspx";         

      //默认文档            

   newSiteEntry.Properties["AuthNTLM"][0] = true;  // 指定集成 Windows 身份验证       

               newSiteEntry.CommitChanges();              

           DirectoryEntry vdEntry = newSiteEntry.Children.Add("root", "IIsWebVirtualDir");