C# HTTP request相关总结

最近好多应用都用到了HTTP，然后每次使用，都重新找一遍资料，没有把知识总结起来，学不到什么。现在总结下之前遇到的情况的处理方式。

1：WP8.1 httpRequest异步读取数据 GET

 1  async  ReadUrlAsync(int tempid)
 2         {
 3
 4
 5             using (var client = new HttpClient())
 6             {
 7                 client.DefaultRequestHeaders.Add("Accept", "application/json;odata=verbose");//header什么的添加,修改
 8                 var data = await client.GetStringAsync("http://baidu.com");
 9
10                 json(data.ToString());//对得到的数据的处理
11                　　12             }
13         }

2：httpRequest 同步 GET

 public static string GetData()
        {

            string URL = "http://baidu.com";
            HttpWebRequest webReq = (HttpWebRequest)WebRequest.Create(URL);
            webReq.Method = "get";

            try
            {
                HttpWebResponse response = (HttpWebResponse)webReq.GetResponse();
                Stream myResponseStream = response.GetResponseStream();
                StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
                string retString = myStreamReader.ReadToEnd();
                myStreamReader.Close();
                myResponseStream.Close();
                if (retString != "")
                    return ToUnicode(retString);
                else
                    return "-1";
            }
            catch
            {
                return "-1";
            }
        }

3:同步 Post

 public void PostData(string strText)
    {
        string URL = "baidu.com";
        string strPostdata = "A=213&B=213";  //要post的数据
        Encoding encoding = Encoding.Default;
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);
        request.Method = "post";byte[] buffer = encoding.GetBytes(strPostdata);
        request.ContentLength = buffer.Length;

        request.GetRequestStream().Write(buffer, 0, buffer.Length);
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.GetEncoding("utf-8"));

        reader.readtoend();
    }

4:异步Post wp

var values = new List<KeyValuePair<string, string>>
                    {
                        new KeyValuePair<string, string>("api_key", "12345"),
                        new KeyValuePair<string, string>("game_id", "123456")
                    };

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

原来的例子都是网上找的，出处记不清了，最后一个例子是在http://stackoverflow.com/questions/16138275/simple-http-post-in-windows-phone-8

接触不久，可能有好多不恰当的地方，如果您发现了，请务必指正，十分感谢。