string URI = "https://www.herofire.org/api/userlogin?";
            string myParameters = "username=" + textBox1.Text + "&password=" + textBox2.Text;
            string com = URI + myParameters;

            WebClient wc = new WebClient();
            wc.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
            string HtmlResult = wc.UploadString(URI, myParameters);
            string json = wc.DownloadString(com);