Asp.net 访问 共享目录

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 sDomain, string sPassword)

    {

        // 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);

    }

}



//调用;指定共享机器上的用户名,机器名,密码,(不在域控中的.)

using (IdentityScope c = new IdentityScope("userId", "192.168.0.1", "psw"))

{//在此就可以访问了.

	string[] filelist = System.IO.Directory.GetDirectories(@"\\192.168.0.1\folderName");

}