c#中用Webclient类能否遍历文件夹下的所有文件，依次读取呢？？

Question

c#中用Webclient类能否遍历文件夹下的所有文件，依次读取呢？？
例如             WebClient client1 = new WebClient();            byte[] buffer1 = client1.DownloadData("***");
能否通过某些语句依次遍历文件夹下的文件，依次downloaddata呢？？

Answer 1

public static bool DownloadFile(string URL,string FilePath)
{
     webClicent client1=new WebClient();
     Stream WebStream;
     try
     {
        webStream=client1.OpenRead(URL);
     }
     catch(Exception er1)
     {
        return false;
     }
     StreamReader reader=new StreamReader(WebStream);
     string data=reader.ReadTOEnd();
     try
     {
        FileStream localStream=new FileStream(FilePath,FileMode.Create,FileAccess.Write);
        StreamWriter writer=new StreamWriter(localStream);
        writer.Write(data);
        writer.Close();
        localStream.Close();
        return true;
     }
      catch(Exception)
      {
         return false;
      }
}

Answer 2

不行，因为Http没有文件夹的概念。
当然，有些服务器的确会返回某些路径下的文件列表，但是对于客户端来说，它也是以HTML页面的形式出现的。

Answer 3

参考下面这个，这个就是我遍历文件夹下所有文件，进行下载的(我自动升级时用的)private void DownUpdateFile()
{
            try
            {
                mainAppExe = updaterXmlFiles.GetNodeValue("//EntryPoint");
                Process[] allProcess = Process.GetProcesses();
                foreach (Process p in allProcess)
                {                    if (p.ProcessName.ToLower() + ".exe" == mainAppExe.ToLower())
                    {
                        for (int i = 0; i < p.Threads.Count; i++)
                            p.Threads[i].Dispose();
                        p.Kill();
                        isRun = true;
                    }
                }
                //上面那些可以不用管,从下面开始看读取文件的                WebClient wcClient = new WebClient();
                for (int i = 0; i < this.lvUpdateList.Items.Count; i++)
                {
                    string UpdateFile = lvUpdateList.Items[i].Text.Trim();
                    string updateFileUrl = updateUrl + "/" + lvUpdateList.Items[i].Text.Trim();
                    long fileLength = 0;                    WebRequest webReq = WebRequest.Create(updateFileUrl);
                    WebResponse webRes = webReq.GetResponse();
                    fileLength = webRes.ContentLength;                    lbState.Text = "正在下载更新文件,请稍后...";
                    pbDownFile.Value = 0;
                    pbDownFile.Maximum = (int)fileLength;                    try
                    {
                        Stream srm = webRes.GetResponseStream();
                        StreamReader srmReader = new StreamReader(srm);
                        byte[] bufferbyte = new byte[fileLength];
                        int allByte = (int)bufferbyte.Length;
                        int startByte = 0;
                        while (fileLength > 0)
                        {
                            Application.DoEvents();
                            int downByte = srm.Read(bufferbyte, startByte, allByte);
                            if (downByte == 0) { break; };
                            startByte += downByte;
                            allByte -= downByte;
                            pbDownFile.Value += downByte;                            float part = (float)startByte / 1024;
                            float total = (float)bufferbyte.Length / 1024;
                            int percent = Convert.ToInt32((part / total) * 100);                            this.lvUpdateList.Items[i].SubItems[2].Text = percent.ToString() + "%";                        }                        string tempPath = tempUpdatePath + UpdateFile;
                        CreateDirtory(tempPath);
                        FileStream fs = new FileStream(tempPath, FileMode.OpenOrCreate, FileAccess.Write);
                        fs.Write(bufferbyte, 0, bufferbyte.Length);
                        srm.Close();
                        srmReader.Close();
                        fs.Close();
                    }
                    catch (WebException ex)
                    {
                        MessageBox.Show("更新文件下载失败！" + ex.Message.ToString(), "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                }
                InvalidateControl();
                this.Cursor = Cursors.Default;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
}