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On 2012/1/6 12:08 PM, Cyndi Bradberry wrote:
I can't seem to get my monitor opcode to work. I defined the error
code for an invalid date in the 'D' specs as BadDate.
C Monitor
C Test (E) RtDate
C On-Error BadDate
C Eval SError = 'Invalid Date'
C GoTo ReDisplay
C EndMon
Cyndi, when you code the (E) extender on the Test, that causes the error
to be handled by setting on %Error.
As a rule of thumb, whenever you code (E) you should immediately follow
it by a check of %Error.
You can either code the (E) and check %error:
C Test (E) RtDate
C If %Error
C Eval SError = 'Invalid Date'
C GoTo ReDisplay
C Endif
Or you can remove the (E) and then it will get to the On-Error:
C Monitor
C Test RtDate
C On-Error BadDate
C Eval SError = 'Invalid Date'
C GoTo ReDisplay
C EndMon
(But there's nothing wrong with mixing (E) and Monitor. You could use
(E) and %Error to immediately deal with expected errors in a section of
code, and use On-Error to handle any unexpected errors.)
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