本人在网上公开的源代码上加上了,搜索,修改,删除。
    using System;
    
    using System.Collections.Generic;
    
    using System.Text;
    
    using System.DirectoryServices;
    
    using System.Data;
  
    
    namespace Common
    
    {
    
        public class ADHelper
    
        {
    
            private static string DomainName = "VMEX";
  
private static string LDAPDomain = "DC=VMEX,DC=local";
private static string ADPath = " LDAP://DC=VMEX,DC=local ";
            //AD管理员帐号
    
            private static string ADUser = "Administrator";
  
            //AD管理员密码
    
            private static string ADPasssWord = "
    
      1234@abcd
    
    ";
  
private static IdentityImpersonation impersonate = new IdentityImpersonation(ADUser, ADPasssWord, DomainName);
            ///
    
            ///用户登录验证结果
    
            ///
    
            public enum LoginResult
    
            {
    
                ///
    
                ///正常登录
    
                ///
    
                LOGIN_USER_OK = 0,
    
                ///
    
                ///用户不存在
    
                ///
    
                LOGIN_USER_DOESNT_EXIST,
    
                ///
    
                ///用户帐号被禁用
    
                ///
    
                LOGIN_USER_ACCOUNT_INACTIVE,
    
                ///
    
                ///用户密码不正确
    
                ///
    
                LOGIN_USER_PASSWORD_INCORRECT
    
            }
  
            ///
    
            ///用户属性定义标志
    
            ///
    
            public enum ADS_USER_FLAG_ENUM
    
            {
    
                ///
    
                ///登录脚本标志。如果通过 ADSI LDAP 进行读或写操作时,该标志失效。如果通过 ADSI WINNT,该标志为只读。
    
                ///
    
                ADS_UF_SCRIPT = 0X0001,
    
                ///
    
                ///用户帐号禁用标志
    
                ///
    
                ADS_UF_ACCOUNTDISABLE = 0X0002,
    
                ///
    
                ///主文件夹标志
    
                ///
    
                ADS_UF_HOMEDIR_REQUIRED = 0X0008,
    
                ///
    
                ///过期标志
    
                ///
    
                ADS_UF_LOCKOUT = 0X0010,
    
                ///
    
                ///用户密码不是必须的
    
                ///
    
                ADS_UF_PASSWD_NOTREQD = 0X0020,
    
                ///
    
                ///密码不能更改标志
    
                ///
    
                ADS_UF_PASSWD_CANT_CHANGE = 0X0040,
    
                ///
    
                ///使用可逆的加密保存密码
    
                ///
    
                ADS_UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED = 0X0080,
    
                ///
    
                ///本地帐号标志
    
                ///
    
                ADS_UF_TEMP_DUPLICATE_ACCOUNT = 0X0100,
    
                ///
    
                ///普通用户的默认帐号类型
    
                ///
    
                ADS_UF_NORMAL_ACCOUNT = 0X0200,
    
                ///
    
                ///跨域的信任帐号标志
    
                ///
    
                ADS_UF_INTERDOMAIN_TRUST_ACCOUNT = 0X0800,
    
                ///
    
                ///工作站信任帐号标志
    
                ///
    
                ADS_UF_WORKSTATION_TRUST_ACCOUNT = 0x1000,
    
                ///
    
                ///服务器信任帐号标志
    
                ///
    
                ADS_UF_SERVER_TRUST_ACCOUNT = 0X2000,
    
                ///
    
                ///密码永不过期标志
    
                ///
    
                ADS_UF_DONT_EXPIRE_PASSWD = 0X10000,
    
                ///
    
                /// MNS 帐号标志
    
                ///
    
                ADS_UF_MNS_LOGON_ACCOUNT = 0X20000,
    
                ///
    
                ///交互式登录必须使用智能卡
    
                ///
    
                ADS_UF_SMARTCARD_REQUIRED = 0X40000,
    
                ///
    
                ///当设置该标志时,服务帐号(用户或计算机帐号)将通过 Kerberos 委托信任
    
                ///
    
                ADS_UF_TRUSTED_FOR_DELEGATION = 0X80000,
    
                ///
    
                ///当设置该标志时,即使服务帐号是通过 Kerberos 委托信任的,敏感帐号不能被委托
    
                ///
    
                ADS_UF_NOT_DELEGATED = 0X100000,
    
                ///
    
                ///此帐号需要 DES 加密类型
    
                ///
    
                ADS_UF_USE_DES_KEY_ONLY = 0X200000,
    
                ///
    
                ///不要进行 Kerberos 预身份验证
    
                ///
    
                ADS_UF_DONT_REQUIRE_PREAUTH = 0X4000000,
    
                ///
    
                ///用户密码过期标志
    
                ///
    
                ADS_UF_PASSWORD_EXPIRED = 0X800000,
    
                ///
    
                ///用户帐号可委托标志
    
                ///
    
                ADS_UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION = 0X1000000
    
            }
  
            public ADHelper()
    
            {
    
                //
    
            }
  
            ///
    
            ///获得DirectoryEntry对象实例,以管理员登陆AD
    
            ///
    
            ///
    
            private static DirectoryEntry GetDirectoryObject()
    
            {
    
                DirectoryEntry entry = new DirectoryEntry(ADPath, ADUser, ADPasssWord, AuthenticationTypes.Secure);
    
                return entry;
    
            }
  
            ///
    
            ///根据指定用户名和密码获得相应DirectoryEntry实体
    
            ///
    
            ///
    
            ///
    
            ///
    
            private static DirectoryEntry GetDirectoryObject(string userName, string password)
    
            {
    
                DirectoryEntry entry = new DirectoryEntry(ADPath, userName, password, AuthenticationTypes.None);
    
                return entry;
    
            }
  
            private static DirectoryEntry GetDirectoryObject(string domainReference)
    
            {
    
                DirectoryEntry entry = new DirectoryEntry(ADPath + domainReference, ADUser, ADPasssWord, AuthenticationTypes.Secure);
    
                return entry;
    
            }
  
            /// <summary>
    
            /// 找到该用户对象
    
            /// </summary>
    
            /// <param name="commonName"></param>
    
            /// <returns></returns>
    
            public static DirectoryEntry GetDirectoryEntry(string commonName)
    
            {
    
                DirectoryEntry de = GetDirectoryObject();
    
                DirectorySearcher deSearch = new DirectorySearcher(de);
    
                deSearch.Filter = "(&(&(objectCategory=person)(objectClass=user))(cn=" + commonName + "))";
    
                deSearch.SearchScope = SearchScope.Subtree;
  
                try
    
                {
    
                    SearchResult result = deSearch.FindOne();
    
                    de = new DirectoryEntry(result.Path);
    
                    return de;
    
                }
    
                catch
    
                {
    
                    return null;
    
                }
  
}
             ///
    
             ///根据用户公共名称和密码取得用户的 对象。
    
             ///
    
             ///用户公共名称 
    
             ///用户密码 
    
             ///如果找到该用户,则返回用户的 对象;否则返回 null
    
             public static DirectoryEntry GetDirectoryEntry(string commonName, string password)
    
             {
    
                  DirectoryEntry de = GetDirectoryObject(commonName, password);
    
                  DirectorySearcher deSearch = new DirectorySearcher(de);
    
                  deSearch.Filter = "(&(&(objectCategory=person)(objectClass=user))(cn=" + commonName + "))";
    
                  deSearch.SearchScope = SearchScope.Subtree;
    
     
    
                  try
    
                  {
    
                       SearchResult result = deSearch.FindOne();
    
                       de = new DirectoryEntry(result.Path);
    
                       return de;
    
                  }
    
                  catch
    
                  {
    
                       return null;
    
                  }
    
             }
    
     
    
             ///
    
             ///根据用户帐号称取得用户的 对象
    
             ///
    
             ///用户帐号名 
    
             ///如果找到该用户,则返回用户的 对象;否则返回 null
    
             public static DirectoryEntry GetDirectoryEntryByAccount(string sAMAccountName)
    
             {
    
                  DirectoryEntry de = GetDirectoryObject();
    
                  DirectorySearcher deSearch = new DirectorySearcher(de);
    
                  deSearch.Filter = "(&(&(objectCategory=person)(objectClass=user))(sAMAccountName=" + sAMAccountName + "))";
    
                  deSearch.SearchScope = SearchScope.Subtree;
    
     
    
                  try
    
                  {
    
                       SearchResult result = deSearch.FindOne();
    
                       de = new DirectoryEntry(result.Path);
    
                       return de;
    
                  }
    
                  catch
    
                  {
    
                       return null;
    
                  }
    
             }
    
     
    
             ///
    
             ///根据用户帐号和密码取得用户的 对象
    
             ///
    
             ///用户帐号名 
    
             ///用户密码 
    
             ///如果找到该用户,则返回用户的 对象;否则返回 null
    
             public static DirectoryEntry GetDirectoryEntryByAccount(string sAMAccountName, string password)
    
             {
    
                  DirectoryEntry de = GetDirectoryEntryByAccount(sAMAccountName);
    
                  if (de != null)
    
                  {
    
                       string commonName = de.Properties["cn"][0].ToString();
    
     
    
                       if (GetDirectoryEntry(commonName, password) != null)
    
                           return GetDirectoryEntry(commonName, password);
    
                       else
    
                           return null;
    
                  }
    
                  else
    
                  {
    
                       return null;
    
                  }
    
             }
    
     
    
             ///
    
             ///根据组名取得用户组的 对象
    
             ///
    
             ///组名 
    
             ///
    
             public static DirectoryEntry GetDirectoryEntryOfGroup(string groupName)
    
             {
    
                  DirectoryEntry de = GetDirectoryObject();
    
                  DirectorySearcher deSearch = new DirectorySearcher(de);
    
                  deSearch.Filter = "(&(objectClass=group)(cn=" + groupName + "))";
    
                  deSearch.SearchScope = SearchScope.Subtree;
    
     
    
                  try
    
                  {
    
                       SearchResult result = deSearch.FindOne();
    
                       de = new DirectoryEntry(result.Path);
    
                       return de;
    
                  }
    
                  catch
    
                  {
    
                       return null;
    
                  }
    
             }
    
     
    
      
    
     
    
             #region GetProperty
    
     
    
             ///
    
             ///获得指定 指定属性名对应的值
    
             ///
    
             ///
    
             ///属性名称 
    
             ///属性值
    
             public static string GetProperty(DirectoryEntry de, string propertyName)
    
             {
    
                  if(de.Properties.Contains(propertyName))
    
                  {
    
                       return de.Properties[propertyName][0].ToString() ;
    
                  }
    
                  else
    
                  {
    
                       return string.Empty;
    
                  }
    
             }
    
     
    
             ///
    
             ///获得指定搜索结果 中指定属性名对应的值
    
             ///
    
             ///
    
             ///属性名称 
    
             ///属性值
    
             public static string GetProperty(SearchResult searchResult, string propertyName)
    
             {
    
                  if(searchResult.Properties.Contains(propertyName))
    
                  {
    
                       return searchResult.Properties[propertyName][0].ToString() ;
    
                  }
    
                  else
    
                  {
    
                       return string.Empty;
    
                  }
    
             }
    
     
    
             #endregion
    
     
    
             ///
    
             ///设置指定 的属性值
    
             ///
    
             ///
    
             ///属性名称 
    
             ///属性值 
    
             public static void SetProperty(DirectoryEntry de, string propertyName, string propertyValue)
    
             {
    
                  if(propertyValue != string.Empty || propertyValue != "" || propertyValue != null)
    
                  {
    
                       if(de.Properties.Contains(propertyName))
    
                       {
    
                           de.Properties[propertyName][0] = propertyValue; 
    
                       }
    
                       else
    
                       {
    
                           de.Properties[propertyName].Add(propertyValue);
    
                       }
    
                  }
    
             }
    
     
    
             
    
      ///
    
    
    
               ///创建新的用户
    
    
    
               ///
    
    
    
               ///N 位置。例如:OU=共享平台 或 CN=Users 
    
    
    
               ///公共名称 
    
    
    
               ///帐号 
    
    
    
               ///密码 
    
    
    
               ///physicalDeliveryOfficeName:办公位置:
    
    
    
               ///description:设备描述:
    
    
    
               ///telephoneNumber:固资编码:
    
    
    
               ///department:部门(二级部门):
    
    
    
               ///company:公司(一级部门):
    
    
    
               ///wWWHomePage:IP 地址:
    
    
    
               public static DirectoryEntry CreateNewUser(string ldapDN,string snName, string commonName, string sAMAccountName, string password,
    
    
    
                   string description,string physicalDeliveryOfficeName, 
    
    
    
                   string telephoneNumber, string department,string title,
    
    
    
                  string company, string wWWHomePage)
    
    
    
               {
    
    
    
                    DirectoryEntry entry = GetDirectoryObject();
    
    
    
                    DirectoryEntry subEntry = entry.Children.Find(ldapDN);
    
    
    
                    DirectoryEntry deUser = subEntry.Children.Add("CN=" + commonName, "user");
    
    
    
                    deUser.Properties["sAMAccountName"].Value = sAMAccountName;
    
    
    
                    //deUser.Properties["description"].Value = description;
    
    
    
                    //deUser.Properties["physicalDeliveryOfficeName"].Value = physicalDeliveryOfficeName;
    
    
    
                    //deUser.Properties["telephoneNumber"].Value = telephoneNumber;
    
    
    
                    //deUser.Properties["department"].Value = department;
    
    
    
                    //deUser.Properties["title"].Value = title;
    
    
    
                    //deUser.Properties["company"].Value = company;
    
    
    
                    //deUser.Properties["wWWHomePage"].Value = wWWHomePage;
    
    
    
                    ADHelper.SetProperty(deUser, "sn", snName);
    
    
    
                    ADHelper.SetProperty(deUser, "description", description);
    
    
    
                    ADHelper.SetProperty(deUser, "physicalDeliveryOfficeName", physicalDeliveryOfficeName);
    
    
    
                    ADHelper.SetProperty(deUser, "telephoneNumber", telephoneNumber);
    
    
    
                    ADHelper.SetProperty(deUser, "department", department);
    
    
    
                    ADHelper.SetProperty(deUser, "title", title);
    
    
    
                    ADHelper.SetProperty(deUser, "company", company);
    
    
    
                    ADHelper.SetProperty(deUser, "wWWHomePage", wWWHomePage);
    
    
    
                    deUser.CommitChanges();
    
    
    
                  
    
    
    
                    //ADHelper.SetProperty(deUser, "description", description);
    
    
    
                    ADHelper.SetPassword(commonName, password);
    
    
    
                    ADHelper.EnableUser(commonName);
    
    
    
                    
    
    
    
                    deUser.Close();
    
    
    
                    return deUser;
    
    
    
               }
    
  
    
            
    
      /// <summary>
    
    
    
              /// 删除用户
    
    
    
              /// 
    
    
    
              /// </summary>
    
    
    
              /// <param name="ldapDN"></param>
    
    
    
              /// <param name="sAMAccountName"></param>
    
    
    
               public static void DelUser(string ldapDN, string sAMAccountName)
    
    
    
               {
    
    
    
                   DirectoryEntry entry = GetDirectoryObject();
    
    
    
                   DirectoryEntry subEntry = entry.Children.Find(ldapDN);
    
  
    
                   DirectorySearcher deSearch = new DirectorySearcher(subEntry);
    
    
    
                  deSearch.Filter = "(&(&(objectCategory=person)(objectClass=user))(sAMAccountName=" + sAMAccountName + "))";
    
    
    
                  deSearch.SearchScope = SearchScope.Subtree;
    
    
    
       
    
    
    
                  SearchResult result = deSearch.FindOne();
    
    
    
                  DirectoryEntry de = new DirectoryEntry(result.Path);
    
    
    
                 
    
    
    
                  subEntry.Children.Remove(de);
    
    
    
       
    
    
    
                  entry.CommitChanges();
    
  
    
                  de.Close(); 
    
    
    
               }
    
  
    
               public static DataTable GetAllUser(string ouName)
    
    
    
               {
    
    
    
                   DataTable dt = new DataTable();
    
    
    
                   dt.Columns.Add("CN");
    
    
    
                   dt.Columns.Add("sAMAccountName");
    
    
    
                   dt.Columns.Add("description");
    
    
    
                   dt.Columns.Add("physicalDeliveryOfficeName");
    
    
    
                   dt.Columns.Add("telephoneNumber");
    
    
    
                   dt.Columns.Add("department");
    
    
    
                   dt.Columns.Add("title");
    
    
    
                   dt.Columns.Add("company");
    
    
    
                   dt.Columns.Add("wWWHomePage");
    
  
    
                   DirectoryEntry adRoot = GetDirectoryObject();
    
    
    
                   //设备MAC认证
    
    
    
                   DirectoryEntry ou = adRoot.Children.Find("OU=" + ouName);
    
  
    
                   DirectorySearcher mySearcher = new DirectorySearcher(ou);
    
    
    
                   //(&(&(objectCategory=person)(objectClass=user))(cn=" + commonName + "))
    
    
    
                   //mySearcher.Filter = ("(objectClass=user)");
    
    
    
                   mySearcher.Filter = "(&(&(objectCategory=person)(objectClass=user)))";
    
  
    
                   foreach (System.DirectoryServices.SearchResult resEnt in mySearcher.FindAll())
    
    
    
                   {
    
    
    
                       DataRow dr = dt.NewRow();
    
    
    
                       dr["CN"] = string.Empty;
    
    
    
                       dr["sAMAccountName"] = string.Empty;
    
    
    
                       dr["description"] = string.Empty;
    
    
    
                       dr["physicalDeliveryOfficeName"] = string.Empty;
    
    
    
                       dr["telephoneNumber"] = string.Empty;
    
    
    
                       dr["department"] = string.Empty;
    
    
    
                       dr["title"] = string.Empty;
    
    
    
                       dr["company"] = string.Empty;
    
    
    
                       dr["wWWHomePage"] = string.Empty;
    
  
    
    
                       DirectoryEntry user = resEnt.GetDirectoryEntry();
    
  
    
                       if (user.Properties.Contains("sAMAccountName"))
    
    
    
                       {
    
    
    
                           dr["sAMAccountName"] = user.Properties["sAMAccountName"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("CN"))
    
    
    
                       {
    
    
    
                           dr["CN"] = user.Properties["CN"][0].ToString();
    
    
    
                       }
    
  
    
                       if (user.Properties.Contains("description"))
    
    
    
                       {
    
    
    
                           dr["description"] = user.Properties["description"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("physicalDeliveryOfficeName"))
    
    
    
                       {
    
    
    
                           dr["physicalDeliveryOfficeName"] = user.Properties["physicalDeliveryOfficeName"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("telephoneNumber"))
    
    
    
                       {
    
    
    
                           dr["telephoneNumber"] = user.Properties["telephoneNumber"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("department"))
    
    
    
                       {
    
    
    
                           dr["department"] = user.Properties["department"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("title"))
    
    
    
                       {
    
    
    
                           dr["title"] = user.Properties["title"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("company"))
    
    
    
                       {
    
    
    
                           dr["company"] = user.Properties["company"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("wWWHomePage"))
    
    
    
                       {
    
    
    
                           dr["wWWHomePage"] = user.Properties["wWWHomePage"][0].ToString();
    
    
    
                       }
    
    
    
                       dt.Rows.Add(dr);
    
  
}
    
                   return dt;
    
    
    
               }
    
  
          
    
        /// <summary>
    
    
    
              /// 查询用户
    
    
    
              /// </summary>
    
    
    
              /// <param name="ouName"></param>
    
    
    
              /// <returns></returns>
    
    
    
               public static DataTable GetAdUser(string ouName, string commonName)
    
    
    
               {
    
    
    
                   DataTable dt = new DataTable();
    
    
    
                   dt.Columns.Add("cn");
    
    
    
                   dt.Columns.Add("sAMAccountName");
    
    
    
                   dt.Columns.Add("description");
    
    
    
                   dt.Columns.Add("physicalDeliveryOfficeName");
    
    
    
                   dt.Columns.Add("telephoneNumber");
    
    
    
                   dt.Columns.Add("department");
    
    
    
                   dt.Columns.Add("title");
    
    
    
                   dt.Columns.Add("company");
    
    
    
                   dt.Columns.Add("wWWHomePage");
    
  
    
                   DirectoryEntry adRoot = GetDirectoryObject();
    
    
    
                   //设备MAC认证
    
    
    
                   DirectoryEntry ou = adRoot.Children.Find("OU=" + ouName);
    
  
    
                   DirectorySearcher mySearcher = new DirectorySearcher(ou);
    
    
    
                   //(&(&(objectCategory=person)(objectClass=user))(cn=" + commonName + "))
    
    
    
                   //mySearcher.Filter = ("(objectClass=user)");
    
    
    
                   mySearcher.Filter = "(&(&(objectCategory=person)(objectClass=user))(cn=" + commonName + "))";
    
  
    
                   foreach (System.DirectoryServices.SearchResult resEnt in mySearcher.FindAll())
    
    
    
                   {
    
    
    
                       DataRow dr = dt.NewRow();
    
    
    
                       dr["cn"] = string.Empty;
    
    
    
                       dr["sAMAccountName"] = string.Empty;
    
    
    
                       dr["description"] = string.Empty;
    
    
    
                       dr["physicalDeliveryOfficeName"] = string.Empty;
    
    
    
                       dr["telephoneNumber"] = string.Empty;
    
    
    
                       dr["department"] = string.Empty;
    
    
    
                       dr["title"] = string.Empty;
    
    
    
                       dr["company"] = string.Empty;
    
    
    
                       dr["wWWHomePage"] = string.Empty;
    
    
    
                       
    
  
    
                       DirectoryEntry user = resEnt.GetDirectoryEntry();
    
    
    
                       if (user.Properties.Contains("cn"))
    
    
    
                       {
    
    
    
                           dr["cn"] = user.Properties["cn"][0].ToString();
    
    
    
                       }
    
  
    
                       if (user.Properties.Contains("sAMAccountName"))
    
    
    
                       {
    
    
    
                           dr["sAMAccountName"] = user.Properties["sAMAccountName"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("description"))
    
    
    
                       {
    
    
    
                           dr["description"] = user.Properties["description"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("physicalDeliveryOfficeName"))
    
    
    
                       {
    
    
    
                           dr["physicalDeliveryOfficeName"] = user.Properties["physicalDeliveryOfficeName"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("telephoneNumber"))
    
    
    
                       {
    
    
    
                           dr["telephoneNumber"] = user.Properties["telephoneNumber"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("department"))
    
    
    
                       {
    
    
    
                           dr["department"] = user.Properties["department"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("title"))
    
    
    
                       {
    
    
    
                           dr["title"] = user.Properties["title"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("company"))
    
    
    
                       {
    
    
    
                           dr["company"] = user.Properties["company"][0].ToString();
    
    
    
                       }
    
    
    
                       if (user.Properties.Contains("wWWHomePage"))
    
    
    
                       {
    
    
    
                           dr["wWWHomePage"] = user.Properties["wWWHomePage"][0].ToString();
    
    
    
                       }
    
    
    
                       dt.Rows.Add(dr);
    
  
}
return dt;
}
    
            /// <summary>
    
            /// 
    
            /// </summary>
    
            /// <param name="ouName"></param>
    
            /// <param name="commonName">登陆帐号</param>
    
            /// <returns></returns>
    
             public static DataTable GetUser(string ouName, string commonName)
    
             {
    
                 DataTable dt = new DataTable();
    
                 dt.Columns.Add("cn");
    
                 dt.Columns.Add("sAMAccountName");
    
                 dt.Columns.Add("description");
    
                 dt.Columns.Add("physicalDeliveryOfficeName");
    
                 dt.Columns.Add("telephoneNumber");
    
                 dt.Columns.Add("department");
    
                 dt.Columns.Add("title");
    
                 dt.Columns.Add("company");
    
                 dt.Columns.Add("wWWHomePage");
  
                 DirectoryEntry adRoot = GetDirectoryObject();
    
                 //设备MAC认证
    
                 DirectoryEntry ou = adRoot.Children.Find("OU=" + ouName);
  
                 DirectorySearcher mySearcher = new DirectorySearcher(ou);
    
                 //(&(&(objectCategory=person)(objectClass=user))(cn=" + commonName + "))
    
                 //mySearcher.Filter = ("(objectClass=user)");
    
                 mySearcher.Filter = "(&(&(objectCategory=person)(objectClass=user))(sAMAccountName=" + commonName + "))";
  
                 foreach (System.DirectoryServices.SearchResult resEnt in mySearcher.FindAll())
    
                 {
    
                     DataRow dr = dt.NewRow();
    
                     dr["cn"] = string.Empty;
    
                     dr["sAMAccountName"] = string.Empty;
    
                     dr["description"] = string.Empty;
    
                     dr["physicalDeliveryOfficeName"] = string.Empty;
    
                     dr["telephoneNumber"] = string.Empty;
    
                     dr["department"] = string.Empty;
    
                     dr["title"] = string.Empty;
    
                     dr["company"] = string.Empty;
    
                     dr["wWWHomePage"] = string.Empty;
  
    
                     DirectoryEntry user = resEnt.GetDirectoryEntry();
    
                     if (user.Properties.Contains("cn"))
    
                     {
    
                         dr["cn"] = user.Properties["cn"][0].ToString();
    
                     }
  
                     if (user.Properties.Contains("sAMAccountName"))
    
                     {
    
                         dr["sAMAccountName"] = user.Properties["sAMAccountName"][0].ToString();
    
                     }
    
                     if (user.Properties.Contains("description"))
    
                     {
    
                         dr["description"] = user.Properties["description"][0].ToString();
    
                     }
    
                     if (user.Properties.Contains("physicalDeliveryOfficeName"))
    
                     {
    
                         dr["physicalDeliveryOfficeName"] = user.Properties["physicalDeliveryOfficeName"][0].ToString();
    
                     }
    
                     if (user.Properties.Contains("telephoneNumber"))
    
                     {
    
                         dr["telephoneNumber"] = user.Properties["telephoneNumber"][0].ToString();
    
                     }
    
                     if (user.Properties.Contains("department"))
    
                     {
    
                         dr["department"] = user.Properties["department"][0].ToString();
    
                     }
    
                     if (user.Properties.Contains("title"))
    
                     {
    
                         dr["title"] = user.Properties["title"][0].ToString();
    
                     }
    
                     if (user.Properties.Contains("company"))
    
                     {
    
                         dr["company"] = user.Properties["company"][0].ToString();
    
                     }
    
                     if (user.Properties.Contains("wWWHomePage"))
    
                     {
    
                         dr["wWWHomePage"] = user.Properties["wWWHomePage"][0].ToString();
    
                     }
    
                     dt.Rows.Add(dr);
  
}
return dt;
             }
    
     
    
             ///
    
             ///创建新的用户。默认创建在 Users 单元下。
    
             ///
    
             ///公共名称 
    
             ///帐号 
    
             ///密码 
    
             ///
    
             public static DirectoryEntry CreateNewUser(string commonName,string snName, string sAMAccountName, 
    
                   string password,
    
                   string description,string physicalDeliveryOfficeName, 
    
                 string telephoneNumber, string department,string title,
    
                string company, string wWWHomePage)
    
             {
    
                 return CreateNewUser("OU=设备MAC认证", commonName,snName, sAMAccountName, password,
    
                       description,physicalDeliveryOfficeName, 
    
                 telephoneNumber, department,title,
    
                 company, wWWHomePage);
    
             }
    
     
    
             ///
    
             ///判断指定公共名称的用户是否存在
    
             ///
    
             ///用户公共名称 
    
             ///如果存在,返回 true;否则返回 false
    
             public static bool IsUserExists(string commonName)
    
             {
    
                  DirectoryEntry de = GetDirectoryObject();
    
                  DirectorySearcher deSearch = new DirectorySearcher(de);
    
                  deSearch.Filter = "(&(&(objectCategory=person)(objectClass=user))(cn=" + commonName + "))";       // LDAP 查询串
    
                  SearchResultCollection results = deSearch.FindAll();
    
     
    
                  if (results.Count == 0)
    
                       return false;
    
                  else
    
                       return true;
    
             }
    
     
    
             ///
    
             ///判断用户帐号是否激活
    
             ///
    
             ///用户帐号属性控制器 
    
             ///如果用户帐号已经激活,返回 true;否则返回 false
    
             public static bool IsAccountActive(int userAccountControl)
    
             {
    
                  int userAccountControl_Disabled = Convert.ToInt32(ADS_USER_FLAG_ENUM.ADS_UF_ACCOUNTDISABLE);
    
                  int flagExists = userAccountControl & userAccountControl_Disabled;
    
     
    
                  if (flagExists > 0)
    
                       return false;
    
                  else
    
                       return true;
    
             }
    
     
    
             ///
    
             ///判断用户与密码是否足够以满足身份验证进而登录
    
             ///
    
             ///用户公共名称 
    
             ///密码 
    
             ///如能可正常登录,则返回 true;否则返回 false
    
             public static LoginResult Login(string commonName, string password)
    
             {
    
                  DirectoryEntry de = GetDirectoryEntry(commonName);
    
     
    
                  if (de != null)
    
                  {
    
                       // 必须在判断用户密码正确前,对帐号激活属性进行判断;否则将出现异常。
    
                       int userAccountControl = Convert.ToInt32(de.Properties["userAccountControl"][0]);
    
                       de.Close();
    
     
    
                       if (!IsAccountActive(userAccountControl))
    
                           return LoginResult.LOGIN_USER_ACCOUNT_INACTIVE;
    
     
    
                       if (GetDirectoryEntry(commonName, password) != null)
    
                           return LoginResult.LOGIN_USER_OK;
    
                       else
    
                           return LoginResult.LOGIN_USER_PASSWORD_INCORRECT;
    
                  }
    
                  else
    
                  {
    
                       return LoginResult.LOGIN_USER_DOESNT_EXIST; 
    
                  }
    
             }
    
     
    
             ///
    
             ///判断用户帐号与密码是否足够以满足身份验证进而登录
    
             ///
    
             ///用户帐号 
    
             ///密码 
    
             ///如能可正常登录,则返回 true;否则返回 false
    
             public static LoginResult LoginByAccount(string sAMAccountName, string password)
    
             {
    
                  DirectoryEntry de = GetDirectoryEntryByAccount(sAMAccountName);
    
                       
    
                  if (de != null)
    
                  {
    
                       // 必须在判断用户密码正确前,对帐号激活属性进行判断;否则将出现异常。
    
                       int userAccountControl = Convert.ToInt32(de.Properties["userAccountControl"][0]);
    
                       de.Close();
    
     
    
                       if (!IsAccountActive(userAccountControl))
    
                           return LoginResult.LOGIN_USER_ACCOUNT_INACTIVE;
    
     
    
                       if (GetDirectoryEntryByAccount(sAMAccountName, password) != null)
    
                           return LoginResult.LOGIN_USER_OK;
    
                       else
    
                           return LoginResult.LOGIN_USER_PASSWORD_INCORRECT;
    
                  }
    
                  else
    
                  {
    
                       return LoginResult.LOGIN_USER_DOESNT_EXIST; 
    
                  }
    
             }
    
     
    
             ///
    
             ///设置用户密码,管理员可以通过它来修改指定用户的密码。
    
             ///
    
             ///用户公共名称 
    
             ///用户新密码 
    
             public static void SetPassword(string commonName, string newPassword)
    
             {
    
                  DirectoryEntry de = GetDirectoryEntry(commonName);
    
                  
    
                  // 模拟超级管理员,以达到有权限修改用户密码
    
                  impersonate.BeginImpersonate();
    
                  de.Invoke("SetPassword", new object[]{newPassword});
    
                  impersonate.StopImpersonate();
    
     
    
                  de.Close();
    
             }
  
             ///
    
             ///启用指定公共名称的用户
    
             ///
    
             ///用户公共名称 
    
             public static void EnableUser(string commonName)
    
             {
    
                 EnableUser(GetDirectoryEntry(commonName));
    
             }
    
             ///
    
             ///启用指定 的用户
    
             ///
    
             ///
    
             public static void EnableUser(DirectoryEntry de)
    
             {
    
                 impersonate.BeginImpersonate();
    
                 de.Properties["userAccountControl"][0] = ADHelper.ADS_USER_FLAG_ENUM.ADS_UF_NORMAL_ACCOUNT | ADHelper.ADS_USER_FLAG_ENUM.ADS_UF_DONT_EXPIRE_PASSWD;
    
                 de.CommitChanges();
    
                 impersonate.StopImpersonate();
    
                 de.Close();
    
             }
    
     
    
             ///
    
             ///设置帐号密码,管理员可以通过它来修改指定帐号的密码。
    
             ///
    
             ///用户帐号 
    
             ///用户新密码 
    
             public static void SetPasswordByAccount(string sAMAccountName, string newPassword)
    
             {
    
                  DirectoryEntry de = GetDirectoryEntryByAccount(sAMAccountName);
    
     
    
                  // 模拟超级管理员,以达到有权限修改用户密码
    
                  IdentityImpersonation impersonate = new IdentityImpersonation(ADUser, ADPasssWord, LDAPDomain);
    
                  impersonate.BeginImpersonate();
    
                  de.Invoke("SetPassword", new object[]{newPassword});
    
                  impersonate.StopImpersonate();
    
     
    
                  de.Close();
    
             }
  
         
    
         /// <summary>
    
    
    
              /// 修改用户资料
    
    
    
              /// </summary>
    
    
    
              /// <param name="sAMAccountName"></param>
    
    
    
               public static void EditUser(string ldapDN, string sAMAccountName,
    
    
    
                   string snName, string description, string physicalDeliveryOfficeName,
    
    
    
                   string telephoneNumber, string department, string title
    
    
    
                   , string wWWHomePage, string company
    
    
    
                   )
    
    
    
               {
    
    
    
                   DirectoryEntry entry = GetDirectoryObject();
    
    
    
                   DirectoryEntry subEntry = entry.Children.Find(ldapDN);
    
  
    
                   DirectorySearcher deSearch = new DirectorySearcher(subEntry);
    
    
    
                   deSearch.Filter = "(&(&(objectCategory=person)(objectClass=user))(sAMAccountName=" + sAMAccountName + "))";
    
    
    
                   deSearch.SearchScope = SearchScope.Subtree;
    
  
    
                   SearchResult result = deSearch.FindOne();
    
    
    
                   DirectoryEntry de = new DirectoryEntry(result.Path);
    
  
    
                   ADHelper.SetProperty(de, "sn", snName);
    
    
    
                   ADHelper.SetProperty(de, "description", description);
    
    
    
                   ADHelper.SetProperty(de, "physicalDeliveryOfficeName", physicalDeliveryOfficeName);
    
    
    
                   ADHelper.SetProperty(de, "telephoneNumber", telephoneNumber);
    
    
    
                   ADHelper.SetProperty(de, "department", department);
    
    
    
                   ADHelper.SetProperty(de, "title", title);
    
    
    
                   ADHelper.SetProperty(de, "company", company);
    
    
    
                   ADHelper.SetProperty(de, "wWWHomePage", wWWHomePage);
    
  
de.CommitChanges();
    
                   de.Close();    
    
    
    
                      }
    
  
    
     
    
             ///
    
             ///修改用户密码
    
             ///
    
             ///用户公共名称 
    
             ///旧密码 
    
             ///新密码 
    
             public static void ChangeUserPassword (string commonName, string oldPassword, string newPassword)
    
             {
    
                  // to-do: 需要解决密码策略问题
    
                  DirectoryEntry oUser = GetDirectoryEntry(commonName);
    
                  oUser.Invoke("ChangePassword", new Object[]{oldPassword, newPassword});
    
                  oUser.Close();
    
             }
    
     
    
           
    
     
    
             
    
             ///
    
             ///禁用指定公共名称的用户
    
             ///
    
             ///用户公共名称 
    
             public static void DisableUser(string commonName)
    
             {
    
                  DisableUser(GetDirectoryEntry(commonName));
    
             }
    
     
    
             ///
    
             ///禁用指定 的用户
    
             ///
    
             ///
    
             public static void DisableUser(DirectoryEntry de)
    
             {
    
                  impersonate.BeginImpersonate();
    
                  de.Properties["userAccountControl"][0]=ADHelper.ADS_USER_FLAG_ENUM.ADS_UF_NORMAL_ACCOUNT | ADHelper.ADS_USER_FLAG_ENUM.ADS_UF_DONT_EXPIRE_PASSWD | ADHelper.ADS_USER_FLAG_ENUM.ADS_UF_ACCOUNTDISABLE;
    
                  de.CommitChanges();
    
                  impersonate.StopImpersonate();
    
                  de.Close();
    
             }
    
     
    
             ///
    
             ///将指定的用户添加到指定的组中。默认为 Users 下的组和用户。
    
             ///
    
             ///用户公共名称 
    
             ///组名 
    
             public static void AddUserToGroup(string userCommonName, string groupName)
    
              {
    
                  DirectoryEntry oGroup = GetDirectoryEntryOfGroup(groupName);
    
                  DirectoryEntry oUser = GetDirectoryEntry(userCommonName);
    
                  
    
                  impersonate.BeginImpersonate();
    
                  oGroup.Properties["member"].Add(oUser.Properties["distinguishedName"].Value);
    
                  oGroup.CommitChanges();
    
                  impersonate.StopImpersonate();
    
     
    
                  oGroup.Close();
    
                  oUser.Close();
    
             }
    
     
    
             ///
    
             ///将用户从指定组中移除。默认为 Users 下的组和用户。
    
             ///
    
             ///用户公共名称 
    
             ///组名 
    
             public static void RemoveUserFromGroup(string userCommonName, string groupName)
    
             {
    
                  DirectoryEntry oGroup = GetDirectoryEntryOfGroup(groupName);
    
                  DirectoryEntry oUser = GetDirectoryEntry(userCommonName);
    
                  
    
                  impersonate.BeginImpersonate();
    
                  oGroup.Properties["member"].Remove(oUser.Properties["distinguishedName"].Value);
    
                  oGroup.CommitChanges();
    
                  impersonate.StopImpersonate();
    
     
    
                  oGroup.Close();
    
                  oUser.Close();
    
             }
    
     
    
         }
  
        
    
    }
  


 
					 
					