Updated title: Why ICommand.CanExecute is getting called all the time, instead of working like an event?

Question

I am adopting MVVM pattern in WPF and have learned the use of Command. But in my implementation, the delegate I assigned to implement CanExecute is alw

Answer 1

May be for unknown reason the UI could be getting updated (Measure, Arrange, and then Render calls). And if you have a breakpoint set on can execute method it'll be re-occurring. In other words you can't get pass this break point, each time you would do F5, the break point will it again.

To investigate you should put the logging/output statements in your can execute method and how many times and when it is getting called.