I have a set of options in a submenu. It's possible to specify the same event handler for all of them, in this case to check/uncheck them when they're clicked. The thing is, I'm not sure if I have the ...

Test projects give you a way to exercise your code to see if it works but they're also part of your project's "permanent record." If all you want to do is try something out with some throwaway code, C ...

Application code needs to raise events and respond to them. The MessagingCenter makes this whole process much simpler than standard .NET events. Tightly coupled systems are a nightmare to deal with.