如何扮演另一個帳號(C#實現)

　　using directives#region Using directives

　　using System;
using SystemSecurityPrincipal;
using SystemRuntimeInteropServices;
using SystemTextRegularExpressions;
#endregion

　　namespace Impersonal
{
    class Program
    {
        測試代碼#region 測試代碼
        public static void Main(string[] args)
        {
            ConsoleWriteLine(當前用戶是:
    + WindowsIdentityGetCurrent()Name);
            ImpersonatedWork testDel = new ImpersonatedWork(Test);
            ImpersonateAndDo(epro\\liping testDel);
            ConsoleWriteLine(當前用戶是:
    + WindowsIdentityGetCurrent()Name);
        }
        static void Test()
        {
            ConsoleWriteLine(當前用戶是:
                + WindowsIdentityGetCurrent()Name);
        }
        #endregion

　　[DllImport(advapidll SetLastError = true)]
        public extern static bool LogonUser(String lpszUsername String lpszDomain
            String lpszPassword int dwLogonType
            int dwLogonProvider ref IntPtr phToken);

　　[DllImport(kerneldll CharSet = CharSetAuto)]
public extern static bool CloseHandle(IntPtr handle);

　　[DllImport(advapidll CharSet = CharSetAuto SetLastError = true)]
public extern static bool DuplicateToken(IntPtr ExistingTokenHandle
int SECURITY_IMPERSONATION_LEVEL ref IntPtr DuplicateTokenHandle);

　　public delegate void ImpersonatedWork();
        /**//// <summary>
        /// 以指定用戶的身份去做一件事情
        /// </summary>
        /// <param name=UserName></param>
        /// <param name=PWD></param>
        /// <param name=WhatToDo></param>
        public static void ImpersonateAndDo(string UserName string PWD ImpersonatedWork WhatToDo)
        {
            扮演用戶#region 扮演用戶
            string domainName = stringEmpty;
            string userName = stringEmpty;
            IntPtr tokenHandle = new IntPtr();
            IntPtr dupeTokenHandle = new IntPtr();
            const int LOGON_PROVIDER_DEFAULT = ;
            const int LOGON_LOGON_INTERACTIVE = ;
            const int SecurityImpersonation = ;
            if (! RegexIsMatch(UserName @^\w+[\\]?\w+$))
            {
                throw new ApplicationException(非法的用戶名);
            }
            string[] tmp = UserNameSplit(new char[] { \\ });
            if (tmpLength > )
            {
                domainName = tmp[];
                userName = tmp[];
            }
            else
            {
                userName = tmp[];
            }
            tokenHandle = IntPtrZero;
            dupeTokenHandle = IntPtrZero;
            bool returnValue = LogonUser(userNamedomainName PWD
                LOGON_LOGON_INTERACTIVE LOGON_PROVIDER_DEFAULT
                ref tokenHandle);
            if (!returnValue)
            {
                throw new ApplicationException(取Handle出錯了!);
            }

　　//ConsoleWriteLine(當前用戶是:
// + WindowsIdentityGetCurrent()Name);

　　bool retVal = DuplicateToken(tokenHandle SecurityImpersonation ref dupeTokenHandle);
            if (!retVal)
            {
                CloseHandle(tokenHandle);
                throw new ApplicationException(復制Handle出錯了!);
            }
            WindowsIdentity newId = new WindowsIdentity(dupeTokenHandle);
            WindowsImpersonationContext impersonatedUser = newIdImpersonate();
            #endregion
            以新用戶身份調用#region 以新用戶身份調用
            WhatToDo();
            #endregion
            取消扮演#region 取消扮演
            impersonatedUserUndo();
            if (tokenHandle != IntPtrZero)
                CloseHandle(tokenHandle);
            if (dupeTokenHandle != IntPtrZero)
                CloseHandle(dupeTokenHandle);
            #endregion
        }
    }
}

From:http://tw.wingwit.com/Article/program/net/201311/12516.html