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我正在尝试获取特定目录中的文件列表，然后我想检查它们的最后修改日期。

初始请求工作正常：

FtpWebRequest request;

request = (FtpWebRequest)WebRequest.Create(new Uri(FtpPath));
request.Credentials = new NetworkCredential("username", "password");

request.Method = WebRequestMethods.Ftp.ListDirectory;

FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);

string FileNames = reader.ReadToEnd();

然后经过一些处理，我选择我感兴趣的文件并尝试检索它们的时间戳。以下情况在循环中发生：

request = (FtpWebRequest)WebRequest.Create(new Uri(FtpPath + Files[i]));
request.Credentials = new NetworkCredential("username", "password");

request.Method = WebRequestMethods.Ftp.GetDateTimestamp;

response = (FtpWebResponse)request.GetResponse();
responseStream = response.GetResponseStream();
reader = new StreamReader(responseStream);

FileDates = reader.ReadToEnd();

我的FileDates变量永远不会被设置为任何东西。我很想把它打包在一个类中以避免可怕的代码重复，但现在我会满足于能够检索我感兴趣的数据。

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1 回答 1

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这是我的粗略解决方案： 

FtpWebRequest request = (FtpWebRequest)WebRequest.Create(new Uri(FtpPath));
reuest.Credentials = new NetworkCredential("user", "password");
request.Method = WebRequestMethods.Ftp.ListDirectory;

FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);

string FileNames = reader.ReadToEnd();
string[] Files = Regex.Split(FileNames,"\r\n");

现在我有一个包含所有文件名的数组

Dictionary<string, DateTime> Dates = new Dictionary<string, DateTime>();

for (int i = 0; i <= Files.Length - 1; i++)
{
    request = (FtpWebRequest)WebRequest.Create(new Uri(FtpPath + Files[i]));
    request.Credentials = new NetworkCredential("user", "password");
    request.Method = WebRequestMethods.Ftp.GetDateTimestamp;
    response = (FtpWebResponse)request.GetResponse();

    DateTime FileDate = response.LastModified;
    Dates.Add(Files[i], FileDate);
}

以及将日期与每个文件相关联以进行进一步处理的字典。我最初的解决方案的问题与我处理响应的方式有关。

于 2011-01-01T18:07:37.720 回答