if

(url.StartsWith(

"https"

, StringComparison.OrdinalIgnoreCase))

///https请求

{

    

ServicePointManager.Expect100Continue =

true

;

    

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;

//SSL3协议替换成TLS协议

    

ServicePointManager.ServerCertificateValidationCallback =

new

RemoteCertificateValidationCallback(CheckValidationResult);

    

webRequest = WebRequest.Create(url)

as

HttpWebRequest;

    

webRequest.ProtocolVersion = HttpVersion.Version10;

}

else

{

    

webRequest = WebRequest.Create(url)

as

HttpWebRequest;

}