can ASP check if an object is an integer?

#1 July 19th, 2005, 02:20 PM

Sorry for the dumb question, but what is the function in ASP to see if an
object / string is an integer?

I want to check the contents of a form, and if it's an integer, i.e a
number, do something, else if it's a word do something else, and I'm not
sure howto?

--

Kind Regards
Rudi Ahlers
+27 (82) 926 1689

Greater love has no one than this, that he lay down his life for his friends
(John 15:13).

#2 July 19th, 2005, 02:20 PM

If IsNumeric(String_To_Check) Then
'// True
'// Do something
Else
'// False
'// Do something else
End If

--

Regards

Steven Burn
Ur I.T. Mate Group
www.it-mate.co.uk

Keeping it FREE!

"Lord Merlin" <SPAM_lordmerlin@bonzai.org.za_SPAM> wrote in message
news:cdmo3m$bdk$1@ctb-nnrp2.saix.net...[color=blue]
> Sorry for the dumb question, but what is the function in ASP to see if an
> object / string is an integer?
>
> I want to check the contents of a form, and if it's an integer, i.e a
> number, do something, else if it's a word do something else, and I'm not
> sure howto?
>
> --
>
>
> Kind Regards
> Rudi Ahlers
> +27 (82) 926 1689
>
> Greater love has no one than this, that he lay down his life for his[/color]
friends[color=blue]
> (John 15:13).
>
>[/color]

#3 July 19th, 2005, 02:20 PM

#4 July 19th, 2005, 02:20 PM

#5 July 19th, 2005, 02:20 PM

#6 July 19th, 2005, 02:20 PM

#7 July 19th, 2005, 02:20 PM

Thanx :)

--

Kind Regards
Rudi Ahlers
+27 (82) 926 1689

Greater love has no one than this, that he lay down his life for his friends
(John 15:13).
"Bob Lehmann" <nospam@dontbotherme.zzz> wrote in message
news:ufdeEJ3bEHA.1152@TK2MSFTNGP09.phx.gbl...
| If Not IsNumeric(industry) Then
|
| '---- Do Stuff
|
| End If
|
| Bob Lehmann
|
| "Lord Merlin" <SPAM_lordmerlin@bonzai.org.za_SPAM> wrote in message
| news:cdmp8g$fme$1@ctb-nnrp2.saix.net...
| > Ok, one more question, how do I use this, if I want to checkif it's not
an
| > integer.
| >
| > I want to check two things, like so:
| >
| > if company_count = 0 and Is(not?)Numeric(industry) then
| > // stuff here
| > end if
| >
| > i.e. If company_count = 0, and industry is not an integer?
| > --
| >
| >
| > Kind Regards
| > Rudi Ahlers
| > +27 (82) 926 1689
| >
| > Greater love has no one than this, that he lay down his life for his
| friends
| > (John 15:13).
| > "Steven Burn" <pvt@noyb.com> wrote in message
| > news:e1iac12bEHA.1732@TK2MSFTNGP09.phx.gbl...
| > | If IsNumeric(String_To_Check) Then
| > | '// True
| > | '// Do something
| > | Else
| > | '// False
| > | '// Do something else
| > | End If
| > |
| > | --
| > |
| > | Regards
| > |
| > | Steven Burn
| > | Ur I.T. Mate Group
| > | www.it-mate.co.uk
| > |
| > | Keeping it FREE!
| > |
| > |
| > | "Lord Merlin" <SPAM_lordmerlin@bonzai.org.za_SPAM> wrote in message
| > | news:cdmo3m$bdk$1@ctb-nnrp2.saix.net...
| > | > Sorry for the dumb question, but what is the function in ASP to see
if
| > an
| > | > object / string is an integer?
| > | >
| > | > I want to check the contents of a form, and if it's an integer, i.e
a
| > | > number, do something, else if it's a word do something else, and I'm
| not
| > | > sure howto?
| > | >
| > | > --
| > | >
| > | >
| > | > Kind Regards
| > | > Rudi Ahlers
| > | > +27 (82) 926 1689
| > | >
| > | > Greater love has no one than this, that he lay down his life for his
| > | friends
| > | > (John 15:13).
| > | >
| > | >
| > |
| > |
| >
| >
|
|

#8 July 19th, 2005, 02:20 PM

On Thu, 22 Jul 2004 00:01:19 +0200, "Lord Merlin"
<SPAM_lordmerlin@bonzai.org.za_SPAM> wrote:
[color=blue]
>Aha, thanx very much :)
>
>btw, is there a manual / website with all the classis ASP commands /
>functions / etc?[/color]

I personally like DevGuru:

http://www.devguru.com/Technologies/...ipt_intro.html

Jeff

#9 July 19th, 2005, 02:20 PM

Lord Merlin wrote:[color=blue]
> Sorry for the dumb question, but what is the function in ASP to see
> if an object / string is an integer?
>
> I want to check the contents of a form, and if it's an integer, i.e a
> number, do something, else if it's a word do something else, and I'm
> not sure howto?[/color]

Everone has been recommending IsNumeric(), but that function is flawed. What
do you guess will be returned by:

Response.Write IsNumeric("1e2")

Try it, I'll wait.

Surprised? Try "1d2".

The explanation is that e and d are exponent indicators. Try CDbl("1d2") and
see what you get ....

100, right? "d" and "e" aren't the only characters that can cross you up.
Depending on the locale, some characters can be used for currency symbols
and thus will also be passed by IsNumeric(), which only verifies that a
string can be converted to at least one of the many numeric subtypes
(including currency, double, single and integer).

The real solution is to use a regular expression to verify that the string
contains only the characters 0-9 (you could use on error resume next and
CInt(), checking for an error on the following line, but it's silly to raise
an error for this purpose).

I just got called away, so somebody else is going to have to show you the
reg exp to use for this task. Chris Hohmann, are you out there? :-)

Bob Barrows

--
Microsoft MVP -- ASP/ASP.NET
Please reply to the newsgroup. The email account listed in my From
header is my spam trap, so I don't check it very often. You will get a
quicker response by posting to the newsgroup.

#10 July 19th, 2005, 02:21 PM

"Bob Barrows [MVP]" <reb01501@NOyahoo.SPAMcom> wrote in message
news:%23jkskQBcEHA.1248@TK2MSFTNGP11.phx.gbl...[color=blue]
> The real solution is to use a regular expression to verify that the string
> contains only the characters 0-9 (you could use on error resume next and
> CInt(), checking for an error on the following line, but it's silly to[/color]
raise[color=blue]
> an error for this purpose).
>
> I just got called away, so somebody else is going to have to show you the
> reg exp to use for this task. Chris Hohmann, are you out there? :-)[/color]

Positive Integer Without Separator:
^\d{1,5}$

Positive Integer With Separator:
^(\d{1,2},\d{3}|\d{1,3}$

Positive/Negative Without Separator:
^-?\d{1,5}$

Positive/Negative With Separator
^-?(\d{1,2},\d{3}|\d{1,3})$

You may need to adjust the above if your locale uses something other than
comma as the thousands separator. Also, you'll want to check for integer
overflow errors.

What is Bytes?

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