ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;.Net 4.0 在抓網頁之前先加這兩行, 就可以了.
.Net 4.5 支援 Tls12, 可以用
ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;