Sorry - I just read Matt Gage's reply. My reply is redundant.

I am a huge fan of try/catch. The try is virtually cost-free with overhead only encountered when an exception is caught. I do agree with Jon Willeke - when I am in older code I normally do not refactor $ZTRAP unless the changes I have to make are more than a simple edit. I also use RETURN when exiting a function/method instead of QUIT.

It is possible to simluate a finally but it isn't as nice as having a real finally block would be.

And the first two lines can be combined:

set str = ##class(%Stream.FileCharacter).%OpenId("c:\myfolder\file.csv")