The Regex problem

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I am useing VS2005 to develop wep application.
I use a RegularExpress both in RegularExpressi onValidator and Regex class to
validate a value.
The RegularExpress is 20|\-9|\-1|[1]?\d{1}

When I enter 33 and validate with RegularExpressi onValidator, it fail to
pass.
But when I validate with regex class :
Regex.IsMatch(S ight0L, @"20|\-9|\-1|[1]?\d{1}");

it passed!!

Why, the results are different?

[Jesse Houwing]

* ad wrote, On 19-7-2006 23:52:

I am useing VS2005 to develop wep application.
I use a RegularExpress both in RegularExpressi onValidator and Regex class to
validate a value.
The RegularExpress is 20|\-9|\-1|[1]?\d{1}

When I enter 33 and validate with RegularExpressi onValidator, it fail to
pass.
But when I validate with regex class :
Regex.IsMatch(S ight0L, @"20|\-9|\-1|[1]?\d{1}");

it passed!!

Why, the results are different?

RegEx.IsMatch uses the .Net regular expression library while the
clientside validator will use the Javascript library. You should be able
to simulate the Javascriptlibar y by setting the RegexOptions.EC MAScript

Regex.IsMatch(S ight0L, @"20|\-9|\-1|[1]?\d{1}", RegexOptions.EC MAScript);

Note that your regex contains a few errors that might be causing this:
(20|-9|-1|1?\d) is probably closer to your needs.

Note that:
'-' is no special character except in character classes (between [ and
]) so no escaping is needed here

[1] is the same as 1, so you can lose the [ and ].

\d{1} is the same as \d, so you can lose the {1}.

It is best to add ( and ) when you're using the '|'.

With these changes both libraries should give the same result.

Jesse Houwing

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Thanks,
My intention of RegularExpress is to test a integer value, if the value :
if ((iSight<=20 && iSight>=0) | (iSight==-1 | iSight==-9)) then pass

When I test with value 44,
My 20|\-9|\-1|[1]?\d{1} will faill when use RegularExpressi onValidator but
passed with Regex class.
I have tried the regular expressin you mentioned about, but it is passed too
when when with Regex class.

"Jesse Houwing" <je***********@ nospam-sogeti.nl>
???????:e4***** *********@TK2MS FTNGP05.phx.gbl ...

>* ad wrote, On 19-7-2006 23:52:

>I am useing VS2005 to develop wep application.
I use a RegularExpress both in RegularExpressi onValidator and Regex class
to validate a value.
The RegularExpress is 20|\-9|\-1|[1]?\d{1} When I enter 33 and validate
with RegularExpressi onValidator, it fail to pass.
But when I validate with regex class :
Regex.IsMatch( Sight0L, @"20|\-9|\-1|[1]?\d{1}");

it passed!!

Why, the results are different?

RegEx.IsMatch uses the .Net regular expression library while the
clientside validator will use the Javascript library. You should be able
to simulate the Javascriptlibar y by setting the RegexOptions.EC MAScript

Regex.IsMatch(S ight0L, @"20|\-9|\-1|[1]?\d{1}", RegexOptions.EC MAScript);

Note that your regex contains a few errors that might be causing this:
(20|-9|-1|1?\d) is probably closer to your needs.

Note that:
'-' is no special character except in character classes (between [ and ])
so no escaping is needed here

[1] is the same as 1, so you can lose the [ and ].

\d{1} is the same as \d, so you can lose the {1}.

It is best to add ( and ) when you're using the '|'.

With these changes both libraries should give the same result.

Jesse Houwing

[Jesse Houwing]

* ad wrote, On 20-7-2006 1:53:

Thanks,
My intention of RegularExpress is to test a integer value, if the value :
if ((iSight<=20 && iSight>=0) | (iSight==-1 | iSight==-9)) then pass

When I test with value 44,
My 20|\-9|\-1|[1]?\d{1} will faill when use RegularExpressi onValidator but
passed with Regex class.
I have tried the regular expressin you mentioned about, but it is passed too
when when with Regex class.

Ok, just add ^ and $ to contrain the regex to the whole input like this:

bool x = Regex..IsMatch( "44", @"^(20|-9|-1|1?\d)$");

It should do the trick.

>
"Jesse Houwing" <je***********@ nospam-sogeti.nl>
???????:e4***** *********@TK2MS FTNGP05.phx.gbl ...

>* ad wrote, On 19-7-2006 23:52:

>>I am useing VS2005 to develop wep application.
I use a RegularExpress both in RegularExpressi onValidator and Regex class
to validate a value.
The RegularExpress is 20|\-9|\-1|[1]?\d{1} When I enter 33 and validate
with RegularExpressi onValidator, it fail to pass.
But when I validate with regex class :
Regex.IsMatch (Sight0L, @"20|\-9|\-1|[1]?\d{1}");

it passed!!

Why, the results are different?

RegEx.IsMatc h uses the .Net regular expression library while the
clientside validator will use the Javascript library. You should be able
to simulate the Javascriptlibar y by setting the RegexOptions.EC MAScript

Regex.IsMatch( Sight0L, @"20|\-9|\-1|[1]?\d{1}", RegexOptions.EC MAScript);

Note that your regex contains a few errors that might be causing this:
(20|-9|-1|1?\d) is probably closer to your needs.

Note that:
'-' is no special character except in character classes (between [ and ])
so no escaping is needed here

[1] is the same as 1, so you can lose the [ and ].

\d{1} is the same as \d, so you can lose the {1}.

It is best to add ( and ) when you're using the '|'.

With these changes both libraries should give the same result.

Jesse Houwing

[Hans Kesting]

I am useing VS2005 to develop wep application.

I use a RegularExpress both in RegularExpressi onValidator and Regex class to
validate a value.
The RegularExpress is 20|\-9|\-1|[1]?\d{1}

When I enter 33 and validate with RegularExpressi onValidator, it fail to
pass.
But when I validate with regex class :
Regex.IsMatch(S ight0L, @"20|\-9|\-1|[1]?\d{1}");

it passed!!

Why, the results are different?

The RegularExpressi onValidator requires the entire string to be
matched. In effect it matches against "^<your RE>$".
When you use Regex.Match, it matches on a single "3", not on the entire
string. It matches the [1]?\d{1} part, because the {1}? is optional.

Hans Kesting