private void Button1_Click(object sender, RoutedEventArgs e) { Configuration config = System.Configuration.ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); string url = config.AppSettings.Settings["url"].Value; Encoding encoding = Encoding.GetEncoding("utf-8"); IDictionary <string, string> parameters = new Dictionary <string, string>(); parameters.Add("TagCode", this.No.Text); parameters.Add("UpdateStateTime", dateTimePicker1.DateTime.ToString()); parameters.Add("State", "1");; HttpWebResponse response = MainWindow.CreatePostHttpResponse(url, parameters, encoding); //打印返回值 Stream stream = response.GetResponseStream(); //获取响应的字符串流 StreamReader sr = new StreamReader(stream); //创建一个stream读取流 string html = sr.ReadToEnd(); //从头读到尾,放到字符串html if (Convert.ToString(html[8]) == "0") { this.display.Text = "激活成功"; } else { this.display.Text = "激活失败"; } Console.WriteLine(html); }