"err.clear" does not change control flow behavior but clears the properties of the err object, including err.number. "on error goto 0" changes control flow behavior so that the next error, rather than setting err properties, will abort code execution.
Beware, by the way, the exact meaning of "on error resume next": It literally means "on error, resume on the next code line." This has surprising implications for the following two lines: if myvar = 1 then and do while ii <= n If myvar doesn't exist, for example, the next line will run as if myvar were 1. If ii doesn't exist, the loop would never exit. Of course you can check for err.number inside the If and While loops to catch this, but it's something not everyone remembers to do. Moral: Type carefully between "on error resume next" and "on error goto 0" lines, and at least if you think like I do, keep those sections as short as possible. On Mon, Nov 04, 2013 at 02:52:24PM +0100, David wrote: Scripters, I am a bit confused. I have tried to search the net for different methods of error handling in VBS, and found that there seem to be some kind of confusion going on. Smile. At least, I can't make head and tail to a certain point here. I have an Error [1]http://librivox.org/podcast.xmlHandling code like this: On Error Resume Next 'Perform an action If Err.Number <>0 Then 'Do something Else ' Do something else. End If 'Err.Number <>0. OK, this code seems to work pretty fine, at least as long as I only perform an error check one place in my code. Yet, if I have a similar code further down the app, it seems as the error resuming does not stop. So, I searched the net. And I found two instructions, that confuses me: 1: Err.Clear and, 2: On Error Goto 0. Can anyone tell me which of them, I should use in my code, so as to reset the error resuming for each time i have checked for an error? What is the correct place to put any of these instructions? Should I put them before, after, or even somewhere inside the Error checking routine? Hope all of this made any sense, and that someone please would be kind to enlighten me. Thanks, References 1. http://librivox.org/podcast.xmlHandling -- Doug Lee, Senior Accessibility Programmer SSB BART Group - Accessibility-on-Demand mailto:[email protected] http://www.ssbbartgroup.com "While they were saying among themselves it cannot be done, it was done." --Helen Keller
