Using FtpWebResponse to download file - file downloads even after removed from ftp server?

Question

I am downloading a file from an ftp server using FtpWebResponse. My code looks like this:

FtpWebRequest request;
try
{
    request = (FtpWebRequest)FtpWebRequest.Create(path);
    request.UseBinary = true; 
    request.Credentials = new NetworkCredential(user, passwd);
    request.Method = WebRequestMethods.Ftp.DownloadFile;
    using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
    {
        MemoryStream ms = new MemoryStream();
        using (Stream rs = (Stream)response.GetResponseStream())                         
        {
            rs.CopyTo(ms);          
        }         
    }
}
catch (Exception ex)
{
    ... error handling code here ...
}   

Which worked fine - I was able to read the memory stream and see the file. I was testing, so I copied another file to the ftp server, deleted the old one, and renamed the new one to the same name, then re-ran my program. I was still seeing the old file - the one I had deleted from the ftp server - not the new one. So I deleted the new file - now there are no files on the ftp server. I re-run my program, and it runs without error and continues to show me the original file from the ftp server. If I ftp directly to the ftp server I verify that there are no files there...

What's happening? Is the connection cached? These symptoms have been evident for an hour or so now...

Answer 1

Try:

request.CachePolicy = new System.Net.Cache.RequestCachePolicy(System.Net.Cache.RequestCacheLevel.NoCacheNo‌​Store);