System Net C# by API

using System;
using System.IO;
using System.Net;
public class OpenWriteTest
{
   public static void Main(string[] argv)
   {
      WebClient wc = new WebClient();
      string data = "Data up upload to server";
      Stream strm = wc.OpenWrite(argv[0]);
      StreamWriter sw = new StreamWriter(strm);
      sw.WriteLine(data);
      sw.Close();
      strm.Close();
   }
}