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Simplest error routine of all time
Message
 
À
03/05/2000 23:15:59
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Divers
Thread ID:
00365939
Message ID:
00366627
Vues:
13
That is good, but if you give users the ability to *Ignore* errors you need to ensure that your code accounts for that.

For e.g. you always issue the DELETE command as DELETE IN .

If you are going to allow *Ignore* of errors you must be conscious of this as you write every line of your code and ensure that you will not cause data corruption when a procedure continues into code it is not supposed to.

Here is an example of correctily coding if you allow ignoring of errors:

IF NOT DBF() == UPPER(lcTableToZap)
ELSE
ZAP
ENDIF

>I've used this error handler as the most simple to get done what has to be done.
>
>on error do ezerror with message()
>
>
>PROCEDURE Ezerror
>PARAMETERS cMessage
>lnVal = messagebox("AN ERROR OCCURED" + CHR(13) + CHR(13) + cMessage + CHR(13) + CHR(13),2)
>DO CASE
> CASE lnval = 3
> CANCEL
> CASE lnval=4
> RETRY
> CASE lnval=5
> RETURN
>
>ENDCASE
>RETURN
>
>No constants, no subroutines, no external routines. Simple as it gets.
George
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