获取FTP SERVER中具有最早创建日期的文件

Question

我编写了下一个代码，该代码为我提供了包含/ DocXML中文件的列表。

我想要获取具有最早创建日期的文件。我该怎么做？

谢谢大家。

private void button2_Click(object sender, EventArgs e)
{
    ftp.DownloadFile(textBox1.Text, textBox7.Text);
    FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://192.168.47.1/DocXML");
    request.Method = WebRequestMethods.Ftp.ListDirectory;
    request.Credentials = new NetworkCredential("username", "password");

    FtpWebResponse response = (FtpWebResponse)request.GetResponse();

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

    string names = reader.ReadToEnd();

    textBox12.Text = names; 
}