.net發送post請求的兩種方法

public void HttpTestMe()
       {
           string url7 = "http://localhost:2810/Login/login";
           WebRequest request7 = WebRequest.Create(url7);
           request7.Method = "POST";

           //post傳參數
           string postdata = "LoginName=365admin&Password=fob123";
           byte[] bytes = Encoding.ASCII.GetBytes(postdata);
           request7.ContentType = "application/x-www-form-urlencoded";
           request7.ContentLength = postdata.Length;
           Stream sendStream = request7.GetRequestStream();
           sendStream.Write(bytes, 0, bytes.Length);
           sendStream.Close();

           //得到返回值
           WebResponse response7 = request7.GetResponse();
           string OrderQuantity = new StreamReader(response7.GetResponseStream(), Encoding.GetEncoding("gb2312")).ReadToEnd();

           //轉化成json對象處理
           //List<GetOrderQuantity> getOrderQuantity = sr.Deserialize<List<GetOrderQuantity>>(OrderQuantity);


           //方法二:需要添加using System.Net.Http;的引用
           using (HttpClient client = new HttpClient())
           {
               client.BaseAddress = new Uri("http://localhost:2810");
               var content = new FormUrlEncodedContent(new[] { new KeyValuePair<string, string>("LoginName", "365admin"), new KeyValuePair<string, string>("Password", "fob123")});
               var result = client.PostAsync("/Login/login", content).Result;
               string resultContent = result.Content.ReadAsStringAsync().Result;
               Console.WriteLine(resultContent);
           }
       }