一般处理程序获得一个链接返回的值：
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string openid = context .Request ["openid"].ToString();
string num = GetFunction("http://wap.quantumfilm.com.cn/2016/Selec_Openid.aspx?Openid=" + openid);
context.Response.Write(num);
}
//get
public static string GetFunction(string url)
{
string serviceAddress = url;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(serviceAddress);
request.Method = "GET";
request.ContentType = "text/html;charset=UTF-8";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream myResponseStream = response.GetResponseStream();
StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);
string retString = myStreamReader.ReadToEnd();
myStreamReader.Close();
myResponseStream.Close();
return retString;
}