基础连接已经关闭: 未能为 SSL/TLS 安全通道建立信任关系。

定义一个类，来对远程X.509证书的验证，进行处理，返回为true.我们要自己定义一个类，然后在客户单调用WCF服务之前，执行一次即可。代码如下：

public static class Util
    {
        /// 

        /// Sets the cert policy.
        /// 
        public static void SetCertificatePolicy()
        {
            ServicePointManager.ServerCertificateValidationCallback
                       += RemoteCertificateValidate;
        }

        /// 

        /// Remotes the certificate validate.
        /// 
        private static bool RemoteCertificateValidate(
           object sender, X509Certificate cert,
            X509Chain chain, SslPolicyErrors error)
        {
            // trust any certificate!!!
            System.Console.WriteLine("Warning, trust any certificate");
            return true;
        }
    }

你要在调用操作点先调用这个方法： Util.SetCertificatePolicy();