OpenReadWithHttps

///<summary>
///采用https协议访问网络
///</summary>
///<param name="URL">url地址</param>
///<param name="strPostdata">发送的数据</param>
///<returns></returns>
public string OpenReadWithHttps(string URL, string strPostdata)
{
Encoding encoding = Encoding.Default;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);
request.Method = "post";
request.Accept = "text/html, application/xhtml+xml, */*";
request.ContentType = "application/x-www-form-urlencoded";
CookieContainer objcok = new CookieContainer();
objcok.Add(new Uri("http://sufei.cnblogs.com"), new Cookie("键", "值"));
objcok.Add(new Uri("http://sufei.cnblogs.com"), new Cookie("键", "值"));
objcok.Add(new Uri("http://sufei.cnblogs.com"), new Cookie("sidi_sessionid", "360A748941D055BEE8C960168C3D4233"));
request.CookieContainer = objcok;

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"));
return reader.ReadToEnd();
}