如何從接受CSV文件作爲響應的C＃進行POST調用？

Question

我正在從C＃調用Web API的POST方法，並試圖接受CSV文件作爲響應。但是，我的代碼引發此錯誤：

The remote server returned an error: (415) Unsupported Media Type.

我的功能，使通話如下：

public void dataPost() 
    {   
     var request = (HttpWebRequest)WebRequest.Create("http://example.com"); 
     var postData = "filename=filename";    
     var data = Encoding.ASCII.GetBytes(postData); 

     request.Method = "POST"; 
     request.ContentType = "application/x-www-form-urlencoded"; 
     request.ContentLength = data.Length; 

     using (var stream = request.GetRequestStream()) 
     { 
      stream.Write(data, 0, data.Length); 
     } 

     var response = (HttpWebResponse)request.GetResponse(); //fails on this line 

     var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd(); 
     StreamReader sr = new StreamReader(response.GetResponseStream());   
    } 

任何形式的幫助將高度讚賞。謝謝！

Answer 1

嘗試增加：

request.Accept = "text/csv";