【技術FAQ】如何將程式語言設定為 TLS 1.2 ?

如何設定 .NET Framework 支援 TLS 1.2

3.5.1或以下版本，無法支援，建議更新版本至4.6以上版本

如為4.0版本，無法支援，請額外安裝4.5.2以上之版本，

並參考以下範例修改，程式修改或系統機碼設定擇一即可

程式修改參考：

ServicePointManager.SecurityProtocol = (SecurityProtocolType)768 | (SecurityProtocolType)3072;

系統機碼設定參考：

https://blogs.msdn.microsoft.com/jchiou/2016/05/27/%E5%A6%82%E4%BD%95%E5%9C%A8-net-framework-4-0-4-5-%E4%BB%A5%E4%B8%8A%E7%9A%84%E7%A8%8B%E5%BC%8F%E6%94%AF%E6%8F%B4-tls-1-2/

如為.Net Framework4.5.2版本，請參考以下範例修改，程式修改或系統機碼設定擇一即可

程式修改參考：

//Creating the Web Request.

HttpWebRequest httpWebRequest = null;

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;      

ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(AcceptAllCertifications);

httpWebRequest = WebRequest.Create(requestUrl) as HttpWebRequest;

httpWebRequest.ProtocolVersion = HttpVersion.Version10;

系統機碼設定參考：

https://blogs.msdn.microsoft.com/jchiou/2016/05/27/%E5%A6%82%E4%BD%95%E5%9C%A8-net-framework-4-0-4-5-%E4%BB%A5%E4%B8%8A%E7%9A%84%E7%A8%8B%E5%BC%8F%E6%94%AF%E6%8F%B4-tls-1-2/

如為4.6版本以上版本無須修改