問題與HttpRequest的在C＃中的Windows Phone 8.1

Question

我想獲得這樣的字符串響應：

public async Task<string> CheckConnection(){ 
     //Declarations of Variables 
     string result = ""; 

     HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); 
     request.ContinueTimeout = 4000; 
     request.Credentials = CredentialCache.DefaultNetworkCredentials; 

     //Add headers to request 
     request.Headers["Type"] = "CHECK"; 
     request.Headers["Device"] = "1"; 
     request.Headers["Version"] = "0.000"; 
     request.Headers["Os"] = "WindowsPhone"; 

     HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync(); 

     if (response.StatusCode == HttpStatusCode.OK) 
     { 
      //To obtain response body 
      Stream streamResponse = response.GetResponseStream(); 
      StreamReader streamRead = new StreamReader(streamResponse, Encoding.UTF8); 

      result = streamRead.ReadToEnd(); 
      streamRead.Dispose(); 
     } 

     return result; 
    } 

    public async Task<string> SizeFit() 
    { 
     //Declarations of Variables 
     string result = ""; 

     HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); 
     request.Credentials = CredentialCache.DefaultNetworkCredentials; 

     //Add headers to request 
     request.Headers["Type"] = "SIZEFIT"; 
     request.Headers["Device"] = "1"; 
     request.Headers["Version"] = "0.000"; 
     request.Headers["Os"] = "WindowsPhone"; 

     HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync(); 
     if (response.StatusCode != null) 
     { 
      //To obtain response body 
      Stream streamResponse = response.GetResponseStream(); 
      StreamReader streamRead = new StreamReader(streamResponse, Encoding.UTF8); 

      result = streamRead.ReadToEnd(); 
      streamRead.Dispose(); 
     } 

     return result; 
    } 

當我使用這個通用功能獲得1真正的連接和尺寸，但始終返回1作爲syze當我的拉鍊有大小的4K ...

public async Task<string> doSync() 
    { 
     //Declaration of variables 
     string response = await CheckConnection(); 

     //When is 1, the checkConnection will connect then request Size of zip! 
     if (response == "1") 
     { 
      response = await SizeFit(); 
     } 

     return response; 
    } 

任何一個可以幫助我嗎？提前致謝。

Answer 1

解決！只需添加：

request.Headers["Cache-Control"] = "no-cache"; 
request.Headers["Pragma"] = "no-cache"; 

這是用於Windows Phone緩存問題的httpwebrequest！