Everybody knows that you should close a connection immediately after you finish using it.
Due to a flaw in my domain object model design, I've had to leave the connection open for the full page life cycle. Essentially, I have a Just In Time property which opens a connection on first call, and then on Page.Unload (..) it would check if a db connection was ever open, and then close it if it was. Since it only takes a second, I’ve had the opinion its not too much different than closing it immediately.
Is this ok? Or should it still be closed immediately after every single use?
Thanks in advance.
It's not ideal but I wouldn't re-write my application over it. Unless your page is doing a large amount of time-consuming work in various methods, the whole page lifecycle should execute quickly. In practice it may just mean that your connection object is open a few milliseconds longer than it would have been otherwise. That might be significant in some scenarios, but it doesn't sound like it would be in your case.