FTP获取文件列表错误 [英] FTP gets file list error

问题描述

private string[] GetAllList(string url)
        {
            List<string> list = new List<string>();
            FtpWebRequest req = (FtpWebRequest)WebRequest.Create(new Uri(url));
            req.Credentials = new NetworkCredential(ftpPassword, ftpPassword);
            req.Method = WebRequestMethods.Ftp.ListDirectory;
            req.UseBinary = true;
            req.UsePassive = false;
            try
            {
                using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())
                {
                    using (StreamReader sr = new StreamReader(res.GetResponseStream()))
                    {
                        string s;
                        while ((s = sr.ReadLine()) != null)
                        {
                            list.Add(s);
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                throw (ex);
            }
            return list.ToArray();
        }

使用上述方法

s  =  sr。 ReadLine（）

错误消息提示主机强制关闭现有连接，浏览器可以输入路径以获取文件列表目录。如何解决这个问题？

The error message prompts the host to forcibly close an existing connection, and the browser can input the path to obtain a list of files in the directory. How to solve this problem?

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推荐答案

我不知道什么是问题，但代码中存在错误的异常处理。你使用try {} catch {throw ex;}如果你使用throw ex异常上下文被删除。您可以重写为try {} catch {throw;}，但它与您不使用try / catch相同。因此，在代码中尝试/ catch
阻止是不必要的。 

I don't know what is problem but there is bad exception handling in your code. You use try{} catch{throw ex;} If you use throw ex exception context is removed. You can rewrite as try{} catch{throw;} but it is same as you don't use try/catch. So try/catch block in your code is unnecessary. 

您可以尝试捕获WebException以查看错误代码和消息。

You can try to catch WebException to see error code and message.

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