Microsoft Sync Framework同步文件

public partial class Form1 : Form
    {
        private const string OpenedState = "开启同步";
        private const string ClosedState = "停止同步";
        private string _sourcePath;
        private FileSyncProvider _sourceProvider, _targetProvider;
        private DateTime _starTime;
        private SyncOrchestrator _sync = new SyncOrchestrator();
        private SyncDirectionOrder _syncDirectionOrder = SyncDirectionOrder.Upload;
        private string _targetPath;
        private Thread _thread;


        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            btnStartOrEnd.Text = btnStartOrEnd.Text == OpenedState ? ClosedState : OpenedState;
            _sourcePath = txtSource.Text.Trim();
            _targetPath = txtTarget.Text.Trim();
            GetSyncDirection();
            if (btnStartOrEnd.Text == ClosedState)
            {
                _thread = new Thread(Start) {IsBackground = true};
                _thread.Start();
            }
            else
            {
                _thread.Abort();
                _thread.Interrupt();
                _sourceProvider.Dispose();
                _targetProvider.Dispose();
                _sync.Cancel();
                _starTime = DateTime.MinValue;
                labStatus.Text = @"0/0";
                progressBar.Value = 0;
                labSyncTime.Text = string.Format("已耗时：{0}时{1}分{2}秒", 0, 0, 0);
            }
        }

        private void GetSyncDirection()
        {
            if (rbtnDownload.Checked)
            {
                _syncDirectionOrder = SyncDirectionOrder.Download;
            }
            if (rbtnUpload.Checked)
            {
                _syncDirectionOrder = SyncDirectionOrder.Upload;
            }
            if (rbtnDownloadAndUpload.Checked)
            {
                _syncDirectionOrder = SyncDirectionOrder.DownloadAndUpload;
            }
            if (rbtnUploadAndDownload.Checked)
            {
                _syncDirectionOrder = SyncDirectionOrder.UploadAndDownload;
            }
        }

        private void Start()
        {
            while (true)
            {
                _sourceProvider = new FileSyncProvider(_sourcePath);
                _targetProvider = new FileSyncProvider(_targetPath);
                _sync = new SyncOrchestrator
                {
                    LocalProvider = _sourceProvider,
                    RemoteProvider = _targetProvider,
                    Direction = _syncDirectionOrder
                };
                _sync.SessionProgress += SyncOnSessionProgress;
                _sync.Synchronize();
                Thread.Sleep(1);
            }
        }

        private void SyncOnSessionProgress(object sender, SyncStagedProgressEventArgs syncStagedProgressEventArgs)
        {
            if (_starTime == DateTime.MinValue)
            {
                _starTime = DateTime.Now;
            }
            var completed = (int) syncStagedProgressEventArgs.CompletedWork;
            var total = (int) syncStagedProgressEventArgs.TotalWork;
            if (total == 0)
            {
                _starTime = DateTime.Now;
                return;
            }
            var timeSpan = DateTime.Now - _starTime;
            labSyncTime.Text = string.Format("已耗时：{0}时{1}分{2}秒", timeSpan.Hours, timeSpan.Minutes, timeSpan.Seconds);
            labStatus.Text = string.Format("{0}/{1}", completed, total);
            var percent = (completed*100)/total;
            progressBar.Value = percent;
        }
    }
}

PS:先安装Microsoft Sync Framework SDK.