hóa ra là thu phí
http://data.sinhvienit.net/2013/T02/files/SinhVienIT.Net---keys(1).txtWebClient client = new WebClient();
string[] strArray = Regex.Split(client.DownloadString("http://data.sinhvienit.net/2013/T02/files/SinhVienIT.Net---keys(1).txt"), "==========");