C# wp8 HttpWebRequest POST未发送POST值

我在发送post值时遇到了一个HttpWebRequest，我不知道问题出在哪里

希望有人能在这方面帮助我

这是我的密码

private async void loggingIn(string url, string postdata)
    {
        if (NetworkInterface.GetIsNetworkAvailable())
        {
            try
            {
                var request = WebRequest.Create(new Uri(url)) as HttpWebRequest;
                request.Method = "POST";

                byte[] data = Encoding.UTF8.GetBytes(postdata);
                request.ContentLength = data.Length;
                using (var requestStream = await Task<Stream>.Factory.FromAsync(request.BeginGetRequestStream, request.EndGetRequestStream, request))
                {
                    await requestStream.WriteAsync(data, 0, data.Length);
                }


                WebResponse responseObject = await Task<WebResponse>.Factory.FromAsync(request.BeginGetResponse, request.EndGetResponse, request);
                var responseStream = responseObject.GetResponseStream();
                var sr = new StreamReader(responseStream);
                string received = await sr.ReadToEndAsync();
                MessageBox.Show(received);
            }
            catch
            {

            }
        }
    }
    private void Button_Click(object sender, RoutedEventArgs e)
    {
        string url = "localhost/test.php";
        string password = passwordBoxLogin.Password;
        string username = usernameBoxLogin.Text;

        string postdata = "password=" + password +"&username="+username;

        loggingIn(url,postdata);
    }

private异步void登录（字符串url、字符串postdata）
{
if（NetworkInterface.GetIsNetworkAvailable（））
{
尝试
{
var request=WebRequest.Create（新Uri（url））作为HttpWebRequest；
request.Method=“POST”；
byte[]data=Encoding.UTF8.GetBytes（postdata）；
request.ContentLength=data.Length；
使用（var requestStream=await Task.Factory.fromsync（request.BeginGetRequestStream，request.EndGetRequestStream，request））
{
wait requestStream.WriteAsync（数据，0，数据.Length）；
}
WebResponse responseObject=await Task.Factory.FromAsync（request.BeginGetResponse，request.EndGetResponse，request）；
var responseStream=responseObject.GetResponseStream（）；
var sr=新的StreamReader（responseStream）；
接收到字符串=等待sr.ReadToEndAsync（）；
MessageBox.Show（已接收）；
}
抓住
{
}
}
}
私有无效按钮\u单击（对象发送者，路由目标e）
{
字符串url=“localhost/test.php”；
字符串password=passwordBoxLogin.password；
字符串username=usernameBoxLogin.Text；
字符串postdata=“password=“+password+”&username=“+username；
登录（url、postdata）；
}

问题是我的服务器没有从POST请求接收任何值。 但我确实收到了服务器的响应

这就是我用来检查php服务器上的代码的方法

<?php
   echo $_POST['username'];
   echo"-";
   echo $_POST['password'];
?>

我得到的唯一回报就是-

提前感谢您帮助我：）

它刚刚开始工作，没有任何变化

---

目前案件已结案

我这样修改了你的代码 希望它确实对你有用

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        string url = "localhost/test.php";
        string password = passwordBoxLogin.Password;
        string username = usernameBoxLogin.Text;
        string postdata = "password=" + password +"&username="+username;

        bool isNetwork = NetworkInterface.GetIsNetworkAvailable();
        if (!isNetwork)
        {
        }
        else
        {
         try
          {

            WebClient webClient = new WebClient();
            webClient.Headers["Content-Type"] = "application/json"; // Your Application Header Content-Type 
            webClient.Encoding = Encoding.UTF8;
            webClient.UploadStringCompleted += new UploadStringCompletedEventHandler(proxy_UploadStringCompleted);
            webClient.UploadStringAsync(new Uri(url ), "POST", postdata ,null);
          }
          catch
          {
          }
        }

    }

    private void proxy_UploadStringCompleted(object sender, UploadStringCompletedEventArgs e)
    {
        var response = e.Result;

    }

---

试试这个。这可能对你有帮助

private async void loggingIn(string url, string postdata)
        {
            if (NetworkInterface.GetIsNetworkAvailable())
            {
                try
                {
                 var request = HttpWebRequest.Create(url) as HttpWebRequest;  
                 request.Method = "POST";
                 request.Accept = "application/json";
                 request.ContentType = "application/json";
                 request.BeginGetRequestStream(loginRequest, request);
                 }
                 catch(Exception ex) 
                {
                }
       }
     private void loginRequest(IAsyncResult asyncResult)
      {
       string postdata = "password=" + password +"&username="+username;
       UTF8Encoding encoding = new UTF8Encoding();
       HttpWebRequest request = (HttpWebRequest)asyncResult.AsyncState;
       Stream _body = request.EndGetRequestStream(asyncResult);
       byte[] formBytes = encoding.GetBytes(postdata);
       _body.Write(formBytes, 0, formBytes.Length);
       _body.Close();
        request.BeginGetResponse(loginResponse, request);
      }

     private void loginResponse(IAsyncResult asyncResult)
      {
         try
          {
            HttpWebRequest request = (HttpWebRequest)asyncResult.AsyncState;
            HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(asyncResult);
            HttpWebResponse httpResponse = (HttpWebResponse)response;
            using (Stream data = response.GetResponseStream())
            using (var reader = new StreamReader(data))
            {
            string received = await reader.ReadToEndAsync();
            MessageBox.Show(received);
            }
          }
          catch(Exception ex)
         {
         }
     }