try catch finally question

Question

In a Try Catch Finally block, does the finally block always execute no matter what, or only if the catch block does not return an error?

I was under the impression

Answer 1

The finally block (nearly) always executes, whether or not there was an exception.

I say nearly because there are a few cases where finally isn't guaranteed to be called:

• If there is an infinite loop or deadlock in your code so that the execution remains inside the try or catch blocks then the finally block will never execute.
• If your application is terminated abruptly by killing the process.
• Power cut.
• Calling Environment.FailFast.
• Some exceptions such as:
  • StackOverflowException
  • OutOfMemoryException
  • ExecutingEngineException (now obsolete)
• An exception thrown in a finalizer (source).

Furthermore, even if the finally block is entered if a ThreadAbortException occurs just as the thread enters the finally block the code in the finally block will not be run.

There may be some other cases too...