Question

I need my application to expire 30 days from today, I will store the current date in the application config.How will I check if the application has expired ? I don’t mind if the user changed the clock back and the app works (too stupid a user to do that).

if (appmode == "Trial") {               

            ????

            }

Answer 1

string dateInString = "01.10.2009";

DateTime startDate = DateTime.Parse(dateInString);
DateTime expiryDate = startDate.AddDays(30);
if (DateTime.Now > expiryDate) {
  //... trial expired
}