学步园

 public static void ProcessRequest()
        {
            //类似浏览器确认证书合法方法的绑定
            ServicePointManager.ServerCertificateValidationCallback = RemoteCertificateValidationCallback;
            
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://yourUrl");

            string param = "test=true";
            byte[] bs = Encoding.UTF8.GetBytes(param);

            //这2句代码表示如果要求客户端证书，将客户端证书加入request，不需要客户端证书的https请求则不需要此代码
            X509Certificate cer = new X509Certificate("D:\\tt.cer");
            request.ClientCertificates.Add(cer);

            request.UserAgent = "test";
            request.Method = "post";

            using (Stream reqStram = request.GetRequestStream())
            {
                reqStram.Write(bs, 0, bs.Length);
            }

            using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
            {
                using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                {
                    Console.WriteLine(reader.ReadToEnd());
                }
            }
            
            Console.ReadKey();
        }
        //该方法用于验证服务器证书是否合法，当然可以直接返回true来表示验证永远通过。服务器证书具体内容在参数certificate中。可根据个人需求验证
        //该方法在request.GetResponse()时触发
        public static bool RemoteCertificateValidationCallback(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
        {
            if (sslPolicyErrors == SslPolicyErrors.None)
                return true;
            return false;
        }

        public static void WebRefrence()
        {
            //如果觉得写一个委托方法麻烦，可以直接使用匿名委托
            ServicePointManager.ServerCertificateValidationCallback = delegate(object sender, X509Certificate certificate, 
                X509Chain chain, SslPolicyErrors errors)
            {
                if (errors == SslPolicyErrors.None)
                    return true;
                return false;
            };

            //创建web引用的实例
            WebReference.Service ws = new WebReference.Service();

            //提供客户端证书，不要求的可以忽略该步骤
            ws.ClientCertificates.Add(new X509Certificate("D:\\tt.cer"));
            //执行web service中提供的方法，该例中为将传入的2个int相加并返回结果
            int r = ws.Add(4, 5);
            Console.WriteLine(r);
            Console.ReadKey();
        }