Exceptions - Illustrated C# 2005 - page 278

This code produces the following output:

finally clause in B()
finally clause in A()
catch clause in Main()
finally clause in Main()
After try statement in Main.
-- Keep running.

1. Main calls A , which calls B , which encounters a DivideByZeroException exception.

2. The system checks B 's catch section for a matching catch clause. Although it has one for

IndexOutOfRangeException , it does not have one for DivideByZeroException .

The system then moves down the call stack and checks A 's catch section, where it finds
that A also does not have a matching catch clause.

3.

The system continues down the call stack, and checks Main 's catch clause section,
where it finds that Main does have a DivideByZeroException catch clause.

4.

Although the matching catch clause has now been located, it is not executed yet.
Instead, the system goes back to the top of the stack, executes B 's finally clause, and
pops B from the call stack.

5.

The system then moves to A , executes its finally clause, and pops A from the call stack.

6.

7. Finally, Main 's matching catch clause is executed, followed by its finally clause. Execu-

tion then continues after the end of Main 's try statement.