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【CSharp】怎么获取域用户的密码是否过期
作者:dezai / 发布于2014/4/11/ 439
using System;
using System.DirectoryServices;

namespace SystemFrameworks.Helper
{
 ///
 ///活动目录辅助类。封装一系列活动目录操作相关的方法。
 ///
 public sealed class ADHelper
 {
 ///
 ///域名
 ///
 private static string DomainName = "MyDomain";
 ///
 /// LDAP 地址
 ///
 private static string LDAPDomain = "DC=MyDomain,DC=local";
 ///
 /// LDAP绑定路径
 ///
 private static string ADPath = "LDAP://brooks.mydomain.local";
 ///
 ///登录帐号
 ///
 private static string ADUser = "Administrator";
 ///
 ///登录密码
 ///
 private static string ADPassword = "password";
 ///
 ///扮演类实例
 ///
 private static IdentityImpersonation impersonate = new IdentityImpersonation(ADUser, ADPassword, 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()
 {
 //
 }

 #region GetDirectoryObject

 ///
 ///获得DirectoryEntry对象实例,以管理员登陆AD
 ///
 ///
 private static DirectoryEntry GetDirectoryObject()
 {
 DirectoryEntry entry = new DirectoryEntry(ADPath, ADUser, ADPassword, 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;
 }

 ///
 /// i.e. /CN=Users,DC=creditsights, DC=cyberelves, DC=Com
 ///
 ///
 ///
 private static DirectoryEntry GetDirectoryObject(string domainReference)
 {
 DirectoryEntry entry = new DirectoryEntry(ADPath + domainReference, ADUser, ADPassword, AuthenticationTypes.Secure);
 return entry;
 }

 ///
 ///获得以UserName,Password创建的DirectoryEntry
 ///
 ///
 ///
 ///
 ///
 private static DirectoryEntry GetDirectoryObject(string domainReference, string userName, string password)
 {
 DirectoryEntry entry = new DirectoryEntry(ADPath + domainReference, userName, password, AuthenticationTypes.Secure);
 return entry;
 }

 #endregion

 #region GetDirectoryEntry

 ///
 ///根据用户公共名称取得用户的 对象
 ///
 ///
用户公共名称
 ///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)
 {
 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;
 }
 }

 #endregion

 #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
 ///
 ///
DN 位置。例如：OU=共享平台 或 CN=Users
 ///
公共名称
 ///
帐号
 ///
密码
 ///
 public static DirectoryEntry CreateNewUser(string ldapDN, string commonName, string sAMAccountName, string password)
 {
 DirectoryEntry entry = GetDirectoryObject();
 DirectoryEntry subEntry = entry.Children.Find(ldapDN);
 DirectoryEntry deUser = subEntry.Children.Add("CN=" + commonName, "user");
 deUser.Properties["sAMAccountName"].Value = sAMAccountName;
 deUser.CommitChanges();
 ADHelper.EnableUser(commonName);
 ADHelper.SetPassword(commonName, password);
 deUser.Close();
 return deUser;
 }

 ///
 ///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 sAMAccountName, string password)
 {
 return CreateNewUser("CN=Users", commonName, sAMAccountName, password);
 }

 ///
 ///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();
 }

 ///
 ///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, ADPassword, DomainName);
 impersonate.BeginImpersonate();
 de.Invoke("SetPassword", new object[]{newPassword});
 impersonate.StopImpersonate();

 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();
 }

 ///
 ///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();
 }

 ///
 ///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();
 }

 }

 ///
 ///用户模拟角色类。实现在程序段内进行用户角色模拟。
 ///
 public class IdentityImpersonation
 {
 [DllImport("advapi32.dll", SetLastError=true)]
 public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);

 [DllImport("advapi32.dll", CharSet=CharSet.Auto, SetLastError=true)]
 public extern static bool DuplicateToken(IntPtr ExistingTokenHandle, int SECURITY_IMPERSONATION_LEVEL, ref IntPtr DuplicateTokenHandle);

 [DllImport("kernel32.dll", CharSet=CharSet.Auto)]
 public extern static bool CloseHandle(IntPtr handle);

 // 要模拟的用户的用户名、密码、域(机器名)
 private String _sImperUsername;
 private String _sImperPassword;
 private String _sImperDomain;
 // 记录模拟上下文
 private WindowsImpersonationContext _imperContext;
 private IntPtr _adminToken;
 private IntPtr _dupeToken;
 // 是否已停止模拟
 private Boolean _bClosed;

 ///
 ///构造函数
 ///
 ///
所要模拟的用户的用户名
 ///
所要模拟的用户的密码
 ///
所要模拟的用户所在的域
 public IdentityImpersonation(String impersonationUsername, String impersonationPassword, String impersonationDomain)
 {
 _sImperUsername = impersonationUsername;
 _sImperPassword = impersonationPassword;
 _sImperDomain = impersonationDomain;

 _adminToken = IntPtr.Zero;
 _dupeToken = IntPtr.Zero;
 _bClosed = true;
 }

 ///
 ///析构函数
 ///
 ~IdentityImpersonation()
 {
 if(!_bClosed)
 {
 StopImpersonate();
 }
 }

 ///
 ///开始身份角色模拟。
 ///
 ///
 public Boolean BeginImpersonate()
 {
 Boolean bLogined = LogonUser(_sImperUsername, _sImperDomain, _sImperPassword, 2, 0, ref _adminToken);

 if(!bLogined)
 {
 return false;
 }

 Boolean bDuped = DuplicateToken(_adminToken, 2, ref _dupeToken);

 if(!bDuped)
 {
 return false;
 }

 WindowsIdentity fakeId = new WindowsIdentity(_dupeToken);
 _imperContext = fakeId.Impersonate();

 _bClosed = false;

 return true;
 }

 ///
 ///停止身分角色模拟。
 ///
 public void StopImpersonate()
 {
 _imperContext.Undo();
 CloseHandle(_dupeToken);
 CloseHandle(_adminToken);
 _bClosed = true;
 }
 }
}
=====================================================

简单的应用

[WebMethod]
 public string IsAuthenticated(string UserID,string Password)
 {
 string _path = "LDAP://" + adm + "/DC=lamda,DC=com,DC=cn";//"LDAP://172.75.200.1/DC=名字,DC=com,DC=cn";
 string _filterAttribute=null;

 DirectoryEntry entry = new DirectoryEntry(_path,UserID,Password);

 try
 {
 //Bind to the native AdsObject to force authentication.
 DirectorySearcher search = new DirectorySearcher(entry);
 search.Filter = "(SAMAccountName=" + UserID + ")";
 SearchResult result = search.FindOne();

 if(null == result)
 {
 _filterAttribute="登录失败: 未知的用户名或错误密码.";
 }
 else
 {
 _filterAttribute="true";
 }

 }
 catch (Exception ex)
 {
// if(ex.Message.StartsWith("该服务器不可操作"))
// {
// string mail = ADO.GetConnString("mail");
// entry.Path = "LDAP://"+mail+"/OU=名字,DC=it2004,DC=gree,DC=com,DC=cn";
// try
// {
// DirectorySearcher search = new DirectorySearcher(entry);
// search.Filter = "(SAMAccountName=" + UserID + ")";
// SearchResult result = search.FindOne();
//
// if(null == result)
// {
// _filterAttribute="登录失败: 未知的用户名或错误密码.";
// }
// else
// {
// _filterAttribute="true";
// }
// return _filterAttribute;
//
// }
// catch (Exception ex1)
// {
// return ex1.Message;
// }
//
// }
// else
 return ex.Message;
 }
 return _filterAttribute;
 }
 [WebMethod]
 public string[] LDAPMessage(string UserID)
 {
 string _path = "LDAP://"+adm+"/DC=it2004,DC=名字,DC=com,DC=cn";
 string[] _filterAttribute=new string[5];
 string[] msg = {"samaccountname","displayname","department","company"};

 DirectoryEntry entry = new DirectoryEntry(_path,"180037","790813");


 try
 {


 Object obj = entry.NativeObject;

 DirectorySearcher search = new DirectorySearcher(entry);
 search.Filter = "(SAMAccountName=" + UserID + ")";
 SearchResult result = search.FindOne();


 if(null == result)
 {
 _filterAttribute[0]="登录失败: 未知的用户名或错误密码.";
 }
 else
 {
 _filterAttribute[0]="true";
 for(int propertyCounter = 1; propertyCounter < 5; propertyCounter++)
 {

 if(propertyCounter==4 && result.Properties[msg[propertyCounter-1]][0]==null)
 break;
 _filterAttribute[propertyCounter]=result.Properties[msg[propertyCounter-1]][0].ToString();

 }
 }

 }
 catch (Exception ex)
 {
 //_filterAttribute[0]=ex.Message;
 }
 return _filterAttribute;
 }
 [WebMethod]
 public string[] AllMembers()
 {

 string[] msg;
 string _path = "LDAP://名字";

 DirectoryEntry entry = new DirectoryEntry(_path,"180037","790813");


 //Bind to the native AdsObject to force authentication.
 Object obj = entry.NativeObject;

 System.DirectoryServices.DirectorySearcher mySearcher = new System.DirectoryServices.DirectorySearcher(entry);
 mySearcher.Filter = "(SAMAccountName=180037)";
 msg=new string[mySearcher.FindAll().Count];
 int i=0;
 foreach(System.DirectoryServices.SearchResult result in mySearcher.FindAll())
 {
 msg[i++]=result.Path;
 }
 return msg;
 }

}
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