Sort of Exception C#

Question

Hello,

Please see the following photo from C# Book.

Isn't it better to write FormatException first and then SystemException? because Format Exception is a more specific class than System Exception.
If Format Exception occurs, the first catch section (System Exception) will handle it because a Format Exception is a type of System Exception. and never Format exception will execute when Format Exception occurs.

Answer 1

Not only is it better - it's mandatory. The compiler will give you an error if you're catching a less-derived Exception before a more-derived Exception: