HTTPClient帖子無法正常工作Windows Phone Silverlight

Question

我正在申請Silverlight應用程序。 現在我有執行POST的功能

  public async Task<Webservice> addEvent()
        {
                 var values = new List<KeyValuePair<string, string>>
                {
                    new KeyValuePair<string, string>("email", "qewfwef"),
                    new KeyValuePair<string, string>("password", "qewfwef"),
                    new KeyValuePair<string, string>("firstname", "qewfwef"),
                    new KeyValuePair<string, string>("lastname", "qewfwef"),
                    new KeyValuePair<string, string>("picture", "123456")
                };

        var httpClient = new HttpClient(new HttpClientHandler());
        HttpResponseMessage response = await httpClient.PostAsync(url, new FormUrlEncodedContent(values));
        response.EnsureSuccessStatusCode();
        var responseString = await response.Content.ReadAsStringAsync();

        }

但是我在FormUrlEncodedContent上FormUrlEncodedContent gpt錯誤， FormUrlEncodedContent可以幫忙嗎？

這是錯誤：

The type or namespace name 'FormUrlEncodedContent' could not be found (are you missing a using directive or an assembly reference?)

Answer 1

我遇到了同樣的問題，最終要做的是從NuGet的Microsoft.Net.Http軟件包中進行安裝。

在解決方案資源管理器中右鍵單擊項目名稱。
管理NuGet軟件包。
搜索“ microsoft.net.http”。
安裝。

string site = "https://www.yoursite.com";
var pairs = new List<KeyValuePair<string, string>>
{
    new KeyValuePair<string, string>("email", "qewfwef"),
    new KeyValuePair<string, string>("password", "qewfwef"),
    new KeyValuePair<string, string>("firstname", "qewfwef"),
    new KeyValuePair<string, string>("lastname", "qewfwef"),
    new KeyValuePair<string, string>("picture", "123456")
};

var client = new System.Net.Http.HttpClient();
var content = new FormUrlEncodedContent(pairs);

System.Net.Http.HttpResponseMessage response = await client.PostAsync(site, content);

if (response.IsSuccessStatusCode)
{

}

（在Windows Phone 8.1和10上測試）