（一）CreateWebDir.cs 使用示例

      string sServer = "localhost";
      string VirtualDir = "Bug2004";                   \\虚拟目录
      string PathDir    = @"D:\myWebDirTest\Bug2000"   \\物理目录

   IISManager iisMg = new IISManager(sServer);
   iisMg.Connect();
   
   if (iisMg.Exists(VirtualDir]))
   {
    Console.Write(VirtualDir+ " is exist!");
   }
   else
   {
    myINI.IniWriteValue("WebDir","WebDirExist","false");

    iisMg.get_AnonymousUser();
    string[] anonymousUser = new string[2];
    anonymousUser[0] = iisMg.AnonymousUserName ;
    anonymousUser[1] = iisMg.AnonymousUserPass ;

    VirtualDirectory newVirDir = new VirtualDirectory(VirtualDir,PathDir,anonymousUser);
    if (iisMg.Create(newVirDir))
     Console.Write(VirtualDir+ " 创建成功!");
    else
     Console.Write(VirtualDir+ " 创建不成功!");
   }

   iisMg.Close();

（二）CreateWebDir.cs 是转贴过来的，我作了些完善和修改

///***********************************************************
///**************                IIS控制管理类                **************
///************** 转贴自: 飞刀 http://www.aspcn.com *************
///***********************************************************
using System;
using System.Data;
using System.DirectoryServices;
using System.Collections;

namespace CreateWebDir
{
/// <summary>
/// IISManager 的摘要说明。
/// </summary>
public class IISManager
{
  //定义需要使用的
  private string _server,_website,_AnonymousUserPass,_AnonymousUserName;
  private VirtualDirectories _virdirs;
  protected System.DirectoryServices.DirectoryEntry rootfolder;
  private bool _batchflag;
  public IISManager()
  {
   //默认情况下使用localhost，即访问本地机
   _server = "localhost";
   _website = "1";
   _batchflag = false;
  }
  public IISManager(string strServer)
  {
   _server = strServer;
   _website = "1";
   _batchflag = false;
  }
  /// <summary>
  /// 定义公共属性
  /// </summary>

  public void get_AnonymousUser()
  {
   _AnonymousUserPass="IUSR_DEVE-SERVER";
   _AnonymousUserName="IUSR_DEVE-SERVER";
   VirtualDirectory vDir;
   try
   {
    Hashtable myList = (Hashtable)_virdirs;
    IDictionaryEnumerator myEnumerator = myList.GetEnumerator();
    while ( myEnumerator.MoveNext() )
    {
     vDir = (VirtualDirectory)myEnumerator.Value;
     if (vDir.AnonymousUserName!="" && vDir.AnonymousUserPass != "")
     {
      _AnonymousUserName=vDir.AnonymousUserName;
      _AnonymousUserPass=vDir.AnonymousUserPass;
      break;
     }
    }
   }
   catch
   {
    _AnonymousUserPass="IUSR_DEVE-SERVER";
    _AnonymousUserName="IUSR_DEVE-SERVER";
   }
  }
  public string AnonymousUserName
  {
   get{ return _AnonymousUserName;}
   set{ _AnonymousUserName = value;}
  }
  public string AnonymousUserPass
  {
   get{ return _AnonymousUserPass;}
   set{ _AnonymousUserPass = value;}
  }
  //Server属性定义访问机器的名字，可以是IP与计算名
  public string Server
  {
   get{ return _server;}
   set{ _server = value;}
  }
  //WebSite属性定义，为一数字，为方便，使用string
  //一般来说第一台主机为1,第二台主机为2，依次类推
  public string WebSite
  {
   get{ return _website; }
   set{ _website = value; }
  }

  //虚拟目录的名字
  public VirtualDirectories VirDirs
  {
   get{ return _virdirs; }
   set{ _virdirs = value;}
  }
  ///<summary>
  ///定义公共方法
  ///</summary>

  //连接服务器
  public void Connect()
  {
   ConnectToServer();
  }
  //为方便重载
  public void Connect(string strServer)
  {
   _server = strServer;
   ConnectToServer();
  }
  //为方便重载
  public void Connect(string strServer,string strWebSite)
  {
   _server = strServer;
   _website = strWebSite;
   ConnectToServer();
  }
  //判断是否存这个虚拟目录
  public bool Exists(string strVirdir)
  {
   return _virdirs.Contains(strVirdir);
  }
  //添加一个虚拟目录
  public bool Create(VirtualDirectory newdir)
  {
   string strPath = "IIS://" + _server + "/W3SVC/" + _website + "/ROOT/" + newdir.Name;
   if(!_virdirs.Contains(newdir.Name) _batchflag )
   {
    try
    {
     //加入到ROOT的Children集合中去
     DirectoryEntry newVirDir = rootfolder.Children.Add(newdir.Name,"IIsWebVirtualDir");
     newVirDir.Invoke("AppCreate",true);
     newVirDir.CommitChanges();
     rootfolder.CommitChanges();
     //然后更新数据
     UpdateDirInfo(newVirDir,newdir);
     return true;
    }
    catch(Exception ee)
    {
     //throw new Exception(ee.ToString());
     return false;
    }
   }
   else
   {
    return true;
    //throw new Exception("This virtual directory is already exist.");
   }
  }
  //得到一个虚拟目录
  public VirtualDirectory GetVirDir(string strVirdir)
  {
   VirtualDirectory tmp = null;
   if(_virdirs.Contains(strVirdir))
   {
    tmp = _virdirs.Find(strVirdir);
    ((VirtualDirectory)_virdirs[strVirdir]).flag = 2;
   }
   else
   {
    //throw new Exception("This virtual directory is not exists");
   }
   return tmp;
  }

  //更新一个虚拟目录
  public void Update(VirtualDirectory dir)
  {
   //判断需要更改的虚拟目录是否存在
   if(_virdirs.Contains(dir.Name))
   {
    DirectoryEntry ode = rootfolder.Children.Find(dir.Name,"IIsWebVirtualDir");
    UpdateDirInfo(ode,dir);
   }
   else
   {
    //throw new Exception("This virtual directory is not exists.");
   }
  }
　
  //删除一个虚拟目录
  public void Delete(string strVirdir)
  {
   if(_virdirs.Contains(strVirdir))
   {
    object[] paras = new object[2];
    paras[0] = "IIsWebVirtualDir"; //表示操作的是虚拟目录
    paras[1] = strVirdir;
    rootfolder.Invoke("Delete",paras);
    rootfolder.CommitChanges();
   }
   else
   {
    //throw new Exception("Can''t delete " + strVirdir + ",because it isn''t exists.");
   }
  }
  //批量更新
  public void UpdateBatch()
  {
   BatchUpdate(_virdirs);
  }
  //重载一个：-)
  public void UpdateBatch(VirtualDirectories vds)
  {
   BatchUpdate(vds);
  }
　
  ///<summary>
  ///私有方法
  ///</summary>

  public void Close()
  {
   _virdirs.Clear();
   _virdirs = null;
   rootfolder.Dispose();

  }
  //连接服务器
  private void ConnectToServer()
  {
   string strPath = "IIS://" + _server + "/W3SVC/" + _website +"/ROOT";
   try
   {
    this.rootfolder = new DirectoryEntry(strPath);
    _virdirs = GetVirDirs(this.rootfolder.Children);
   }
   catch(Exception e)
   {
    //throw new Exception("Can''t connect to the server ["+ _server +"] ...",e);
   }
  }
  //执行批量更新
  private void BatchUpdate(VirtualDirectories vds)
  {
   _batchflag = true;
   foreach(object item in vds.Values)
   {
    VirtualDirectory vd = (VirtualDirectory)item;
    switch(vd.flag)
    {
     case 0:
      break;
     case 1:
      Create(vd);
      break;
     case 2:
      Update(vd);
      break;
    }
   }
   _batchflag = false;
  }
  //更新东东
  private void UpdateDirInfo(DirectoryEntry de,VirtualDirectory vd)
  {
   de.Properties["AnonymousUserName"][0] = vd.AnonymousUserName;
   de.Properties["AnonymousUserPass"][0] = vd.AnonymousUserPass;
   de.Properties["AccessRead"][0] = vd.AccessRead;
   de.Properties["AccessExecute"][0] = vd.AccessExecute;
   de.Properties["AccessWrite"][0] = vd.AccessWrite;
   de.Properties["AuthBasic"][0] = vd.AuthBasic;
   de.Properties["AuthNTLM"][0] = vd.AuthNTLM;
   de.Properties["ContentIndexed"][0] = vd.ContentIndexed;
   de.Properties["EnableDefaultDoc"][0] = vd.EnableDefaultDoc;
   de.Properties["EnableDirBrowsing"][0] = vd.EnableDirBrowsing;
   de.Properties["AccessSSL"][0] = vd.AccessSSL;
   de.Properties["AccessScript"][0] = vd.AccessScript;
   de.Properties["DefaultDoc"][0] = vd.DefaultDoc;
   de.Properties["Path"][0] = vd.Path;
   de.CommitChanges();
  }

  //获取虚拟目录集合
  private VirtualDirectories GetVirDirs(DirectoryEntries des)
  {
   VirtualDirectories tmpdirs = new VirtualDirectories();
   foreach(DirectoryEntry de in des)
   {
    if(de.SchemaClassName == "IIsWebVirtualDir")
    {
     VirtualDirectory vd = new VirtualDirectory();
     vd.Name = de.Name;
     vd.AccessRead = (bool)de.Properties["AccessRead"][0];
     vd.AccessExecute = (bool)de.Properties["AccessExecute"][0];
     vd.AccessWrite = (bool)de.Properties["AccessWrite"][0];
     vd.AnonymousUserName = (string)de.Properties["AnonymousUserName"][0];
     vd.AnonymousUserPass = (string)de.Properties["AnonymousUserName"][0];
     vd.AuthBasic = (bool)de.Properties["AuthBasic"][0];
     vd.AuthNTLM = (bool)de.Properties["AuthNTLM"][0];
     vd.ContentIndexed = (bool)de.Properties["ContentIndexed"][0];
     vd.EnableDefaultDoc = (bool)de.Properties["EnableDefaultDoc"][0];
     vd.EnableDirBrowsing = (bool)de.Properties["EnableDirBrowsing"][0];
     vd.AccessSSL = (bool)de.Properties["AccessSSL"][0];
     vd.AccessScript = (bool)de.Properties["AccessScript"][0];
     vd.Path = (string)de.Properties["Path"][0];
     vd.flag = 0;
     vd.DefaultDoc = (string)de.Properties["DefaultDoc"][0];
     tmpdirs.Add(vd.Name,vd);
    }
   }
   return tmpdirs;
  }

}
/// <summary>
/// VirtualDirectory类
/// </summary>
public class VirtualDirectory
{
  private bool _read,_execute,_script,_ssl,_write,_authbasic,_authntlm, _indexed,_endirbrow,_endefaultdoc;
  private string _ausername,_auserpass,_name,_path;
  private int _flag;
  private string _defaultdoc;
  /// <summary>
  /// 构造函数
  /// </summary>
  public VirtualDirectory()
  {
   SetValue();
  }
  public VirtualDirectory(string sVirDirName)
  {
   SetValue();
   _name = sVirDirName;
  }
  // sVirDirName：虚拟路径;
  // strPhyPath： 物理路径( physics Path)
  public VirtualDirectory(string sVirDirName,string strPhyPath,string[] AnonymousUser)
  {
   SetValue();
   _name = sVirDirName;
   _path = strPhyPath;
   _ausername = AnonymousUser[0];
   _auserpass = AnonymousUser[1];
  }
  private void SetValue()
  {
   _read = true;_execute = false;_script = true;_ssl= false;_write=false;_authbasic=false;
   _authntlm=true;_indexed = true;_endirbrow=false;_endefaultdoc = true;
   _flag = 1;
   _defaultdoc = "default.htm,default.aspx,default.asp,index.htm";
   _path = "C:\\";
   _ausername = "IUSR_DEVE-SERVER";_auserpass ="IUSR_DEVE-SERVER";_name="";
  }
  ///<summary>
  ///定义属性,IISVirtualDir太多属性了
  ///我只搞了比较重要的一些，其它的大伙需要的自个加吧。
  ///</summary>

  public int flag
  {
   get{ return _flag;}
   set{ _flag = value;}
  }
  public bool AccessRead
  {
   get{ return _read;}
   set{ _read = value;}
  }
  public bool AccessWrite
  {
   get{ return _write;}
   set{ _write = value;}
  }
  public bool AccessExecute
  {
   get{ return _execute;}
   set{ _execute = value;}
  }
  public bool AccessSSL
  {
   get{ return _ssl;}
   set{ _ssl = value;}
  }
  public bool AccessScript
  {
   get{ return _script;}
   set{ _script = value;}
  }
  public bool AuthBasic
  {
   get{ return _authbasic;}
   set{ _authbasic = value;}
  }
  public bool AuthNTLM
  {
   get{ return _authntlm;}
   set{ _authntlm = value;}
  }
  public bool ContentIndexed
  {
   get{ return _indexed;}
   set{ _indexed = value;}
  }
  public bool EnableDirBrowsing
  {
   get{ return _endirbrow;}
   set{ _endirbrow = value;}
  }
  public bool EnableDefaultDoc
  {
   get{ return _endefaultdoc;}
   set{ _endefaultdoc = value;}
  }
  public string Name
  {
   get{ return _name;}
   set{ _name = value;}
  }
  public string Path
  {
   get{ return _path;}
   set{ _path = value;}
  }
  public string DefaultDoc
  {
   get{ return _defaultdoc;}
   set{ _defaultdoc = value;}
  }
  public string AnonymousUserName
  {
   get{ return _ausername;}
   set{ _ausername = value;}
  }
  public string AnonymousUserPass
  {
   get{ return _auserpass;}
   set{ _auserpass = value;}
  }
}
/// <summary>
/// 集合VirtualDirectories
/// </summary>

public class VirtualDirectories : System.Collections.Hashtable
{
  public VirtualDirectories()
  {
  }
  //添加新的方法
  public VirtualDirectory Find(string strName)
  {
   return (VirtualDirectory)this[strName];
  }
}
}