difference between uploadfile and uploadfilewithuniquename in WebRequestMethods.Ftp

Question

Two questions here :

1)difference between WebRequestMethods.Ftp.uploadfile and WebRequestMethods.Ftp.uploadfilewithuniquename?

2)When i do an upload file using the code below for an already existing file would it override the file.And is it safe to assume that it would always override?

         public static void Main ()
    {
        // Get the object used to communicate with the server.
        FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://www.contoso.com/test.htm");


        request.Method = WebRequestMethods.Ftp.UploadFile;
 // what if i use  request.Method = WebRequestMethods.Ftp.UploadFilewithuniquename;



        // This example assumes the FTP site uses anonymous logon.
        request.Credentials = new NetworkCredential ("anonymous","[email protected]");

        // Copy the contents of the file to the request stream.
        StreamReader sourceStream = new StreamReader("testfile.txt");
        byte [] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
        sourceStream.Close();
        request.ContentLength = fileContents.Length;

        Stream requestStream = request.GetRequestStream();
        requestStream.Write(fileContents, 0, fileContents.Length);
        requestStream.Close();

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

        Console.WriteLine("Upload File Complete, status {0}", response.StatusDescription);

        response.Close();
        }

Answer 1

These methods refer to the FTP commands STOR and STOU.

If the logged in user has the privs, then STOR (WebRequestMethods.Ftp.UploadFile) will create a new file or overwrite an existing file.