Question

有没有办法使用C＃CODE计算FTP目录中存在的文件数。我没有权限使用SSIS，因此我必须使用Visual Studio完成此任务。

Answer 1

使用以下代码

public static String[] FTPListTree(String FtpUri, String User, String Pass) {

List<String> files = new List<String>();
Queue<String> folders = new Queue<String>();
folders.Enqueue(FtpUri);

while (folders.Count > 0) {
    String fld = folders.Dequeue();
    List<String> newFiles = new List<String>();

    FtpWebRequest ftp = (FtpWebRequest)FtpWebRequest.Create(fld);
    ftp.Credentials = new NetworkCredential(User, Pass);
    ftp.UsePassive = false;
    ftp.Method = WebRequestMethods.Ftp.ListDirectory;
    using (StreamReader resp = new StreamReader(ftp.GetResponse().GetResponseStream())) {
        String line = resp.ReadLine();
        while (line != null) {
            newFiles.Add(line.Trim());
            line = resp.ReadLine();
        }
    }

    ftp = (FtpWebRequest)FtpWebRequest.Create(fld);
    ftp.Credentials = new NetworkCredential(User, Pass);
    ftp.UsePassive = false;
    ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
    using (StreamReader resp = new StreamReader(ftp.GetResponse().GetResponseStream())) {
        String line = resp.ReadLine();
        while (line != null) {
            if (line.Trim().ToLower().StartsWith("d") || line.Contains(" <DIR> ")) {
                String dir = newFiles.First(x => line.EndsWith(x));
                newFiles.Remove(dir);
                folders.Enqueue(fld + dir + "/");
            }
            line = resp.ReadLine();
        }
    }
    files.AddRange(from f in newFiles select fld + f);
}
return files.ToArray();
}

您还可以使用以下代码：

   List<string> strList = new List<string>();

  FtpWebRequest fwr = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP));
  fwr.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
  fwr.Method = WebRequestMethods.Ftp.ListDirectory;

    //Can object of type StreamReader as given below
  StreamReader sr = new StreamReader(fwr.GetResponse().GetResponseStream());  
  string str = sr.ReadLine();
        while (str != null)
        {
            strList.Add(str);
            str = sr.ReadLine();
        }
        Console.WriteLine(strList.Count);

使用C＃计算FTP目录中的文件数

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