IT SOLUTIONS
Your full service technology partner! 
-Collapse +Expand
Delphi
Search Delphi Group:

Advanced
-Collapse +Expand Delphi To/From
To/FromCODEGuides
-Collapse +Expand Delphi Store
PRESTWOODSTORE

Prestwood eMagazine

July Edition
Subscribe now! It's Free!
Enter your email:

   ► KBProgrammingDelphi for W...   Print This    All Groups  
  From the September 2009 Issue of Prestwood eMag
 
Delphi for Win32:
Delphi Exception Trapping (try..except, try..finally)
 
Posted 12 years ago on 10/23/2008 and updated 11/25/2008
Delphi Code Snippet:
 A flashcard from our Delphi Flashcards Library
 A code snippet from our Delphi Code Snippets Page

KB101368

Languages Focus: Exception Trapping

A common usage of exception handling is to obtain and use resources in a "try-it" block, deal with any exceptions in an "exceptions" block, and release the resources in some kind of "final" block which executes whether or not any exceptions are trapped.

Delphi Exception Trapping

Use a try..except..end block to trap and process errors.

Delphi also offers a try...finally where code will execute in the finally section no matter what. It's common to put a try..except inside a try..finally.

Syntax Example:
var
y : Double;
begin
try
y := 0;
y := (1/y);
ShowMessage(FloatToStr(y));
except
ShowMessage('You cannot divide by zero.');
end;
end;

Comments

0 Comments.
Share a thought or comment...
 
Write a Comment...
...
Sign in...

If you are a member, Sign In. Or, you can Create a Free account now.


Anonymous Post (text-only, no HTML):

Enter your name and security key.

Your Name:
Security key = P125A1
Enter key:
Code Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

Visit Profile

 KB Article #101368 Counter
9450
Since 10/23/2008
Sales Website: www.prestwood.com Or visit our legacy sales site: 
legacy.prestwood.com


©1995-2020 Prestwood IT Solutions.   [Security & Privacy]