asp.net的get和post请求

//获取第三方api的工具类public class HttpUtils{public static string Get(string Url){//System.GC.Collect();HttpWebRequest request &＃61; (HttpWebRequest)WebRequest.Create(Url);request.Proxy &＃61; null;request.KeepAlive &＃61; false;request.Method &＃61; "GET";request.ContentType &＃61; "application/json; charset&＃61;UTF-8";request.AutomaticDecompression &＃61; DecompressionMethods.GZip;HttpWebResponse response &＃61; (HttpWebResponse)request.GetResponse();Stream myResponseStream &＃61; response.GetResponseStream();StreamReader myStreamReader &＃61; new StreamReader(myResponseStream, Encoding.UTF8);string retString &＃61; myStreamReader.ReadToEnd();myStreamReader.Close();myResponseStream.Close();if (response !&＃61; null){response.Close();}if (request !&＃61; null){request.Abort();}return retString;}public static string Post(string Url, string Data, string Referer){HttpWebRequest request &＃61; (HttpWebRequest)WebRequest.Create(Url);request.Method &＃61; "POST";request.Referer &＃61; Referer;byte[] bytes &＃61; Encoding.UTF8.GetBytes(Data);request.ContentType &＃61; "application/x-www-form-urlencoded";request.ContentLength &＃61; bytes.Length;Stream myResponseStream &＃61; request.GetRequestStream();myResponseStream.Write(bytes, 0, bytes.Length);HttpWebResponse response &＃61; (HttpWebResponse)request.GetResponse();StreamReader myStreamReader &＃61; new StreamReader(response.GetResponseStream(), Encoding.UTF8);string retString &＃61; myStreamReader.ReadToEnd();myStreamReader.Close();myResponseStream.Close();if (response !&＃61; null){response.Close();}if (request !&＃61; null){request.Abort();}return retString;}}