ASP. NET learning 2

This. net has been working for a while, because I want to put the original ASPProgramReplace it with one. net, so I have been exploring, learning, getting, searching online, and reading books. To tell the truth, it's really a little uncomfortable. It's still a bit rewarding, after configuration is started, some problems may occur in practice. One of them is about repeated login, which requires a user to log on only once at the same time, the related solution is also found on the Internet. The principle is: Set the expiration time of the session to 10 minutes, and then connect to the test page every 60 seconds on each page, keep the session valid. If no operation is performed after the time is set, the session will expire. Of course, if the user closes the browser directly, the session will expire in one minute. In this way, the requirements can be met. This will solve the problem.