异步请求

///<summary>

/// HttpClient实现Post请求(异步)

/// </summary>

static async void dooPost()

{

    string url = "http://localhost:52824/api/register";

     //设置HttpClientHandler的AutomaticDecompression

    var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };

    //创建HttpClient（注意传入HttpClientHandler）

    using (var http = new HttpClient(handler))

    {

        //使用FormUrlEncodedContent做HttpContent

        var content = new FormUrlEncodedContent(new Dictionary<string, string>()

        {    {"Id",""},

             {"Name","添加zzl"},

             {"Info", "添加动作"}//键名必须为空

         });

        //await异步等待回应

        var response = await http.PostAsync(url, content);

        //确保HTTP成功状态值

        response.EnsureSuccessStatusCode();

        //await异步读取最后的JSON（注意此时gzip已经被自动解压缩了，因为上面的AutomaticDecompression = DecompressionMethods.GZip）

        Console.WriteLine(await response.Content.ReadAsStringAsync());

    }

}

/// <summary>

/// HttpClient实现Get请求(异步)

/// </summary>

static async void dooGet()

{

    string url = "http://localhost:52824/api/register?id=1";

    //创建HttpClient（注意传入HttpClientHandler）

    var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };

    using (var http = new HttpClient(handler))

    {

        //await异步等待回应

        var response = await http.GetAsync(url);

        //确保HTTP成功状态值

        response.EnsureSuccessStatusCode();

        //await异步读取最后的JSON（注意此时gzip已经被自动解压缩了，因为上面的AutomaticDecompression = DecompressionMethods.GZip）

        Console.WriteLine(await response.Content.ReadAsStringAsync());

    }

}

/// <summary>

/// HttpClient实现Put请求(异步)

/// </summary>

static async void dooPut()

{

    var userId = ;

    string url = "http://localhost:52824/api/register?userid=" + userId;

    //设置HttpClientHandler的AutomaticDecompression

    var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };

    //创建HttpClient（注意传入HttpClientHandler）

    using (var http = new HttpClient(handler))

    {

        //使用FormUrlEncodedContent做HttpContent

        var content = new FormUrlEncodedContent(new Dictionary<string, string>()

        {

           {"Name","修改zzl"},

           {"Info", "Put修改动作"}//键名必须为空

        });

        //await异步等待回应

        var response = await http.PutAsync(url, content);

        //确保HTTP成功状态值

        response.EnsureSuccessStatusCode();

        //await异步读取最后的JSON（注意此时gzip已经被自动解压缩了，因为上面的AutomaticDecompression = DecompressionMethods.GZip）

        Console.WriteLine(await response.Content.ReadAsStringAsync());

    }

转载：https://blog.csdn.net/smartsmile2012/article/details/51613596

         /// <returns></returns>

         public static string DoorAllList()

         {

             var result = "";

             string url = "http://www.baidu.com/Api/GetDoorUserList";

             //创建HttpClientHandler的AutomaticDecompression

             var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };

             //创建一个httpClient;

             using (var client = new HttpClient(handler))

            {

                 //同步请求

                 var response = client.GetAsync(url);

                 //在这里会等待response返回。

                 var ret = response.Result;

                 //最终等待返回结果

                result = ret.Content.ReadAsStringAsync().Result;

             }

            return result;

        }