Window Api 通过账号密码访问共享文件夹

using System;
using System.Runtime.InteropServices;

namespace PushGCodeService
{
    public class SharedTool : 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)]
        static extern 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 = ;
        const int LOGON32_LOGON_NEWCREDENTIALS = ; //域控中的需要用:Interactive = 2
        private bool disposed;

        public SharedTool(string username, string password, string ip)
        {
            // initialize tokens
            IntPtr pExistingTokenHandle = new IntPtr();
            IntPtr pDuplicateTokenHandle = new IntPtr();

            try
            {
                // get handle to token
                bool bImpersonated = LogonUser(username, ip, password,
                    LOGON32_LOGON_NEWCREDENTIALS, LOGON32_PROVIDER_DEFAULT, ref pExistingTokenHandle);

                if (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) return;
            RevertToSelf();
            disposed = true;
        }

        public void Dispose()
        {
            Dispose(true);
        }
    }

}

SharedTool tool = null;

//相关逻辑操作

tool?.Dispose();