HTTPClient 帖子无法正常工作 windows phone silverlight答案

【问题标题】：HTTPClient post not working windows phone silverlightHTTPClient 帖子无法正常工作 windows phone silverlight
【发布时间】：2015-08-28 13:24:31
【问题描述】：

我正在制作一个 Silverlight 应用程序。现在我有这个功能来做一个 POST

  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 上出现 gpt 构建错误，有人可以帮忙吗？

这是错误：

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

【问题讨论】：

标签： c# silverlight windows-phone httpclient

【解决方案1】：

我遇到了同样的问题，我最终不得不从 NuGet 安装 Microsoft.Net.Http 包。

在解决方案资源管理器中右键单击项目名称。
管理 NuGet 包。
搜索“microsoft.net.http”。
安装。

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 上测试）

【讨论】：