url post 请求方法

 1 static class HttpClient
 2     {
 3         static CookieContainer cookies = new CookieContainer();
 4         public static string GetWebResponse(string url, string param)
 5         {
 6             string LoginUrl =new Config().Host + url;
 7 
 8             var bytes = new ASCIIEncoding().GetBytes(param);
 9             var request = (HttpWebRequest)WebRequest.Create(LoginUrl);
10 
11             request.Method = "POST";
12             request.ContentType = "application/x-www-form-urlencoded";
13             request.ContentLength = bytes.Length;
14             request.CookieContainer = cookies;
15             try
16             {
17                 using (Stream stream = request.GetRequestStream())
18                 {
19                     stream.Write(bytes, 0, bytes.Length);
20                     stream.Close();
21                 }
22 
23                 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
24                 {
25                     StreamReader reader = new StreamReader(response.GetResponseStream());
26                     var result = reader.ReadToEnd();
27                     response.Close();
28                     return result;
29                 }
30             }
31             catch (Exception ex)
32             {
33                 throw new AggregateException(ex.ToString());
34             }
35         }
36     }