Another method safer than StreamWriter and how can I save the file on another server (asp.net c sharp)

 using (System.IO.StreamWriter SW = new System.IO.StreamWriter(Server.MapPath("save/information/Data_" + strDate + ".csv")))

{
 SW.WriteLine(s.FirstName + ";" + s.LastName + ";" + s.Address1 + ";");
 SW.Close();
} 

 StreamWriter SW = new StreamWriter(@"\\111.222.1.00\c$\Inetpub\wwwroot\site_toto\ save\information\Data_" + strDate + ".csv");

 using (FTP ftplib = new FTP(MapPath ("Data_" + strDate + ".csv")));

try 
{
    ftplib.Connect("ftp.toto.com", 
                   "tata", 
                   "pata");
    ftplib.ChangeDir("information/");
}
catch(Exception ex)
{    
    Console.WriteLine(s.FirstName + ";" + s.LastName + ";" + s.Address1 + ";");
}

try
{ 
    int perc =  0;
    

    ftplib.OpenDownload("Data_" + strDate + ".csv", true);
    while(ftplib.DoDownload() > 0) 
    { 
        perc = (int)((ftplib.BytesTotal * 100)  / ftplib.FileSize); 
        Console.Write("\rDownloading: {0}/{1} {2}%", 
          ftplib.BytesTotal, ftplib.FileSize, perc);
        Console.Out.Flush();
    }
    Console.WriteLine("");
}
catch(Exception ex) 
{ 
    Console.WriteLine("");
    Console.WriteLine(ex.Message);
}

 using ftplib;