Check if x months have passed in asp.net mvc

Question

I have a budgeting application that sets a budget for n months how can the application know if n months have passed and to unapply the budget? How does mvc automatically check?

Answer 1

Steve's answers above make a simple example of doing that. If you want to make it automatically, you should put it on some services and call it from a scheduler or some services like Hangfire or Quartz.

(DateTime.Now - StartDate)

If this validation has something to do with sending an email notification and so on, I prefer check it from Database and make an SQL job to run it every day or anytime you think its fit in.