針對HTTPS 安全鏈接失敗 解決辦法

解決因為https 安全請求導致的  安全連接失敗問題

放在請求方法前面：

ServicePointManager.ServerCertificateValidationCallback = Callback;//需要配一個方法

System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

 

　　　　　/// <summary>
        /// 針對https 域名
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="certificate"></param>
        /// <param name="chain"></param>
        /// <param name="sslPolicyErrors"></param>
        /// <returns></returns>
        private static bool Callback(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
        {
            return true;
        }