在WinRT和C＃中使用HttpRequestHeaders

我正在使用HttpWebRequests联系API并需要添加标头，但编译器告诉我该方法不存在。 然而，当我检查MSDN时，它告诉我该方法已经存在。 设置我的UserAgent属性也会失败。

有人可以帮我吗？

try{ HttpWebRequest wr = (HttpWebRequest)HttpWebRequest.Create(url); wr.Method = "GET"; wr.Headers.Add(System.Net.HttpRequestHeader.Authorization, string.Format("Bearer {0}", _accessToken)); wr.UserAgent = _appNameAndContact; var resp = (System.Net.HttpWebResponse) await wr.BetterGetResponse(); if (resp.StatusCode == System.Net.HttpStatusCode.OK) { using (var sw = new System.IO.StreamReader(resp.GetResponseStream())) { var msg = sw.ReadToEnd(); User usr = JsonConvert.DeserializeObject(msg); //var results = JSONHelper.Deserialize(msg); return usr; } } } 

Answer 1

你必须使用像这样的HttpRequestMessage ：

  using (var httpClient = new HttpClient()) { var url = new Uri("http://bing.com"); var accessToken = "1234"; using (var httpRequestMessage = new HttpRequestMessage(HttpMethod.Get, url)) { httpRequestMessage.Headers.Add(System.Net.HttpRequestHeader.Authorization.ToString(), string.Format("Bearer {0}", accessToken)); httpRequestMessage.Headers.Add("User-Agent", "My user-Agent"); using (var httpResponseMessage = await httpClient.SendAsync(httpRequestMessage)) { // do something with the response var data = httpRequestMessage.Content; } } }