.Net读取共享文件夹的通用方法

定义类：

public class ShareFolderHelper : 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);

        //Close 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 ShareFolderHelper(string Username, string Password, string IP)
        {
            // initialize tokens         
            IntPtr pExistingTokenHandle = new IntPtr(0);
            IntPtr pDuplicateTokenHandle = new IntPtr(0);

            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)
            {
                RevertToSelf();
                disposed = true;
            }
        }

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

实例：

using (ShareFolderHelper helper = new ShareFolderHelper(connector.SF_USER_ACCOUNT, connector.SF_USER_PASSWORD, connector.SF_IP))
                {
                    string Path = connector.SF_PATH;

                    var dicInfo = new DirectoryInfo(Path);//选择的目录信息    

                    //得到文件夹列表
                    DirectoryInfo[] folderList = dicInfo.GetDirectories("*.*", SearchOption.TopDirectoryOnly);
                    //得到文件列表
                    FileInfo[] fileList = dicInfo.GetFiles("*.*", SearchOption.TopDirectoryOnly);//获取所有目录包含子目录下的文件
                    
                    if (folderList.Length > 0 || fileList.Length > 0)
                    {
                        //Step1: 得到根Folder(包含创建)
                        SF_FOLDER rootArasFolder = GetArasRootFolder(connector);

                        //Step2: 同步文件
                        SyncFileToAras(connector, rootArasFolder, fileList);

                        //Step3: 同步子文件夹
                        SyncFolderToAras(connector, rootArasFolder, folderList);
                    }
                    else
                    {
                        MethodHelper.RecordLog("No folder or file in connector [" + connector.SF_NAME + "] [" + DateTime.Now + "]");
                    }
                }

【原文出处】 http://www.51aras.com/?id=12