using (StreamReader reader = new StreamReader(openFileDialog1.FileName))
                    {
                        int count = 0;
                        string line;
                        while ((line = reader.ReadLine()) != null)
                        {
                            UserData d = new UserData();
                            string[] parts = line.Split(':');
                            count = parts.Length;
                            d.UserName = parts[0].Trim();
                            d.Password = parts[1].Trim();
                            data.Add(d);
                        }

                        foreach(UserData ud in data)
                        {
                            textBox1.Text += ("LOL" + ud.UserName + ud.Password + Environment.NewLine);
                        }

------------------------------------

 try
            {
                if (data.Count() == 0)
                {
                    MessageBox.Show("Load user info first");
                    return;



                }

                var url = @"https://mail.google.com/mail/feed/atom";
                var encoded = TextToBase64(data[0].UserName + ":" + data[0].Password);
                var myweb = HttpWebRequest.Create(url) as HttpWebRequest;
                myweb.Method = "POST";
                myweb.ContentLength = 0;
                myweb.Headers.Add("Authorization", "Basic " + encoded);
                var response = myweb.GetResponse();
                var stream = response.GetResponseStream();
                textBox1.Text += ("Connection established with" );
            }
            catch (Exception ex)
            {
                textBox1.Text += ("Error connection. Original error: " + ex.Message);

            }


    }

    public static string TextToBase64(string sAscii)
    {
        System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
        byte[] bytes = encoding.GetBytes(sAscii);
        return System.Convert.ToBase64String(bytes, 0, bytes.Length);