Re: On Error Resume Next
- From: "rcalvanese" <bcalvanese@xxxxxxxxxxx>
- Date: Sun, 10 Apr 2005 15:56:27 -0400
Thank you Nick for your input.
I would also like to add that anyone who is not sure of the potential risk
involved here. Please... Do a little research and make up your own mind. I
can only express my oppinion here, but I would hate to see someone get in a
bad situation thinking that it was ok because they learned it on this news
group.
Bob Calvanese
"Nick Hodge" <nick_hodgeTAKETHISOUT@xxxxxxxxxxxxxxxxx> wrote in message
news:OowHuidPFHA.2356@xxxxxxxxxxxxxxxxxxxxxxx
> Bob
>
> The overall tenure of your statement is correct. In general On Error
> Resume Next is 'lazy' programming. It is used extensively here as most
> code is by way of example or code which is only run one or does very
> insignificant tasks. If this were not the case less answers would be
> given and people would be a lot more wary to do so, as they would have to
> write full error checking code each time.
>
> Seldom do problems of the magnitude you set out occur, in fact most of the
> time these statements purely stop the code from dropping out for trivial
> errors. (Chart sheet selected instead of worksheet, etc). Granted, it
> could happen the way you outline, but far more mistakes are made in
> functions and linking causing that type of anomaly than would ever be the
> case in code.
>
> All together, I agree, generally bad practice unless you know the outcomes
> you may get
>
> Just my £0.02
>
> --
> HTH
> Nick Hodge
> Microsoft MVP - Excel
> Southampton, England
> nick_hodgeTAKETHISOUT@xxxxxxxxxxxxxxxxx
>
>
> "rcalvanese" <bcalvanese@xxxxxxxxxxx> wrote in message
> news:SradnfbmjfJ2ssTfRVn-tw@xxxxxxxxxxxxxx
>>I have been reading many posts where I see "On Error Resume Next" being
>>used As well as "On Error GoTo 0" (which basically disables the error
>>handeling for the method). I was taught in school that this is a bad
>>programming practice and if we used it in our projects, we would have
>>points taken off our grade. When I began programming for a living, I
>>noticed it was looked down upon by every IT Manager that I have ever met.
>>One example that I can give is as follows:
>>
>> I was working for a telemarketing company who used VB5/VB6/VBA for just
>> about all reporting because all cleint reporting was done in Excel. A
>> client report that had been being run for about 6 months was calculating
>> incorrectly. This calculation was used by our client to make business
>> decissions and had been incorrect for the 6 months that the report was
>> being run. I don't know all the details about the business end of it,
>> but... Our company wound up having to eat 2 millin dollars. The IT
>> manager went to the programmer who wrote the report and found that he had
>> used On Error Resume Next in several places in his code. Upon commenting
>> them all out and running the report, he was able to find the error that
>> caused the calculation problem.
>>
>> Needles to say, the programmer was let go the next day.
>>
>> This is only my oppinion based on what I have learned and experienced
>> thus far. To me it just sets a potential for dissaster. I have done a lot
>> of Excel development over the years, but not in Excel itself. I choose to
>> control excel automation from outside, and have developed some fairly
>> large systems in VB6, and .NET. But it's just a prefference of mine not
>> having to maintain all those proprietary macro's and having them attached
>> to the spead sheet.
>>
>> So anyway... I see this being used pretty extensively here and would like
>> to hear other oppinions as to why people would use this. Sure there are
>> instances where you could save a few lines of code, but a programs
>> effeciency is not measured by how few lines of code are used. And if
>> there are exceptions in anything that I develop... I want to know about
>> it.
>>
>> All oppinions welcome...
>>
>> Bob Calvanese
>>
>
>
.
- References:
- On Error Resume Next
- From: rcalvanese
- Re: On Error Resume Next
- From: Nick Hodge
- On Error Resume Next
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