using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Net;

using System.IO;

using System.Web;

namespace WebAPIClientDemo

{

    public class RestClient

    {

        private string BaseUri;

        public RestClient(string baseUri)

        {

            this.BaseUri = baseUri;

        }

        #region Delete方式

        public string Delete(string data, string uri)

        {

            return CommonHttpRequest(data, uri, "DELETE");

        }

        public string Delete(string uri)

        {

            //Web访问对象64

            string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);

            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);

            myRequest.Method = "DELETE";

            // 获得接口返回值68

            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();

            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);

            //string ReturnXml = HttpUtility.UrlDecode(reader.ReadToEnd());

            string ReturnXml = reader.ReadToEnd();

            reader.Close();

            myResponse.Close();

            return ReturnXml;

        }

        #endregion

        #region Put方式

        public string Put(string data, string uri)

        {

            return CommonHttpRequest(data, uri, "PUT");

        }

        #endregion

        #region POST方式实现

        public string Post(string data, string uri)

        {

            return CommonHttpRequest(data,uri,"POST");

        }

        public string CommonHttpRequest(string data, string uri,string type)

        {

            //Web访问对象，构造请求的url地址

            string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);

            //构造http请求的对象

            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);

            //转成网络流

            byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(data);

            //设置

            myRequest.Method = type;

            myRequest.ContentLength = buf.Length;

            myRequest.ContentType = "application/json";

            myRequest.MaximumAutomaticRedirections = ;

            myRequest.AllowAutoRedirect = true;

            // 发送请求

            Stream newStream = myRequest.GetRequestStream();

            newStream.Write(buf, , buf.Length);

            newStream.Close();

            // 获得接口返回值

            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();

            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);

            string ReturnXml = reader.ReadToEnd();

            reader.Close();

            myResponse.Close();

            return ReturnXml;

        }

        #endregion

        #region GET方式实现

        public string Get(string uri)

        {

            //Web访问对象64

            string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);

            //构造一个Web请求的对象

            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);

            // 获得接口返回值68

            //获取web请求的响应的内容

            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();

            //通过响应流构造一个StreamReader

            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);

            //string ReturnXml = HttpUtility.UrlDecode(reader.ReadToEnd());

            string ReturnXml = reader.ReadToEnd();

            reader.Close();

            myResponse.Close();

            return ReturnXml;

        }

        #endregion

    }

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace WebAPIClientDemo

{

    class Program

    {

        static void Main(string[] args)

        {

            RestClient client = new RestClient("http://localhost:50168");

            #region Get 方式请求列表

            string str = client.Get("api/values");

            Console.WriteLine(str);

            #endregion

            #region Get 方式请求id对应的数据

            string strGetById = client.Get("api/values/2");

            Console.WriteLine(strGetById);

            #endregion

            #region Post 方式 添加数据

            string postUri = "api/values/";

            string userJson = @"{""Id"":123,""Age"":12,""UserInfo"":""111""}";

            string postResponse = client.Post(userJson, postUri);

            Console.WriteLine(postResponse);

            #endregion

            #region Delete 

            string deleteUri = "api/values/3";

             string deleteResponse = client.Delete(deleteUri);

            Console.WriteLine(  deleteResponse);

            #endregion

            #region Put

            string putUri = "api/values/123";

            string userJson3 = @"{""Id"":123,""Age"":12,""UserInfo"":""111""}";

            string putResponse = client.Post(userJson3, putUri);

            Console.WriteLine(putResponse);

            #endregion

            Console.ReadKey();

        }

    }

}