请参阅:
http://msdn.microsoft.com/en-us/library/zhhddkxy.aspx [ ^ ]，
http://***.com/questions/1593923/如何从代码隐藏在网络配置中写入连接字符串 [

Please see:
http://msdn.microsoft.com/en-us/library/zhhddkxy.aspx[^],
http://***.com/questions/1593923/how-to-encrypt-connectionstring-written-in-web-config-from-codebehind[^].

—SA