本文是一篇关于目录访问共享的帖子

用C#访问共享目录老是涌现权限问题，让人很头疼，研究了良久找到一种方法，贴上代码：

public class IdentityScope : IDisposable  
    {    
        // obtains user token     
        [DllImport("advapi32.dll", SetLastError = true)]    
        static extern bool LogonUser(string pszUsername, string pszDomain, string pszPassword,    
            int dwLogonType, int dwLogonProvider, ref IntPtr phToken);    
    
        // closes open handes returned by LogonUser     
        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]    
        extern static bool CloseHandle(IntPtr handle);    
    
        [DllImport("Advapi32.DLL")]    
        static extern bool ImpersonateLoggedOnUser(IntPtr hToken);    
    
        [DllImport("Advapi32.DLL")]    
        static extern bool RevertToSelf();    
        const int LOGON32_PROVIDER_DEFAULT = 0;    
        const int LOGON32_LOGON_NEWCREDENTIALS = 9;//域控中的需要用:Interactive = 2     
        private bool disposed;    
        public IdentityScope(string sUsername,string sPassword, string sDomain)    
        {    
            // initialize tokens     
            IntPtr pExistingTokenHandle = new IntPtr(0);    
            IntPtr pDuplicateTokenHandle = new IntPtr(0);    
    
            try    
            {    
                // get handle to token     
                bool bImpersonated = LogonUser(sUsername, sDomain, sPassword,    
                    LOGON32_LOGON_NEWCREDENTIALS, LOGON32_PROVIDER_DEFAULT, ref pExistingTokenHandle);    
    
                if (true == bImpersonated)    
                {    
                    if (!ImpersonateLoggedOnUser(pExistingTokenHandle))    
                    {    
                        int nErrorCode = Marshal.GetLastWin32Error();    
                        throw new Exception("ImpersonateLoggedOnUser error;Code=" + nErrorCode);    
                    }    
                }    
                else    
                {    
                    int nErrorCode = Marshal.GetLastWin32Error();    
                    throw new Exception("LogonUser error;Code=" + nErrorCode);    
                }    
            }    
            finally    
            {    
                // close handle(s)     
                if (pExistingTokenHandle != IntPtr.Zero)    
                    CloseHandle(pExistingTokenHandle);    
                if (pDuplicateTokenHandle != IntPtr.Zero)    
                    CloseHandle(pDuplicateTokenHandle);    
            }    
        }    
    
        protected virtual void Dispose(bool disposing)    
        {    
            if (!disposed)    
            {    
                RevertToSelf();    
                disposed = true;    
            }    
        }    
    
        public void Dispose()    
        {    
            Dispose(true);    
        }    
    }

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通过IdentityScope传入目标机器的IP，用户名和密码就能够访问到共享目录了。

如何使用如下：

using (IdentityScope iss = new IdentityScope(targetLoginName, targetPassword,targetIP))
 {
           //你的代码        
 }

文章结束给大家分享下程序员的一些笑话语录：某程序员对书法十分感兴趣，退休后决定在这方面有所建树。花重金购买了上等的文房四宝。一日突生雅兴，一番磨墨拟纸，并点上了上好的檀香，颇有王羲之风范，又具颜真卿气势，定神片刻，泼墨挥毫，郑重地写下一行字：hello world.

--------------------------------- 原创文章 By
目录和访问共享
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目录访问共享C#怎么访问共享目录