problem with a regular expression

[giulio santorini]

Hi,
I would like to build a regular expression that allows
only a number with 3 integer the decimals separator and
other three decimals.
I've build the firt part in this way:
^([1-9]{1}|[1-9]{1}[0-9]{1}|100)$

Now I'am tring to build the second one but... it's quite
difficult.
Somebody could help me? This is what I've done:
^([1-9]{1}|[1-9]{1}[0-9]{1}|100)\.([0-9]{1}|[0-9]{2}|[0-9]
{3})$

But it doesn't work as I would... :-\
Thanks in advance!

[Alvin Bruney]

Chris probably hasn't seen this post yet :-)

try this while you wait
www.regexlib.com

"giulio santorini" <gi************ **@yahoo.it> wrote in message
news:09******** *************** *****@phx.gbl.. .

Hi,
I would like to build a regular expression that allows
only a number with 3 integer the decimals separator and
other three decimals.
I've build the firt part in this way:
^([1-9]{1}|[1-9]{1}[0-9]{1}|100)$

Now I'am tring to build the second one but... it's quite
difficult.
Somebody could help me? This is what I've done:
^([1-9]{1}|[1-9]{1}[0-9]{1}|100)\.([0-9]{1}|[0-9]{2}|[0-9]
{3})$

But it doesn't work as I would... :-\
Thanks in advance!

[Shawn O'Donnell]

In article <09************ *************** *@phx.gbl>,
"giulio santorini" <gi************ **@yahoo.it> wrote:

Now I'am tring to build the second one but... it's quite
difficult.
Somebody could help me? This is what I've done:
^([1-9]{1}|[1-9]{1}[0-9]{1}|100)\.([0-9]{1}|[0-9]{2}|[0-9]
{3})$

But it doesn't work as I would... :-\

Tell us what you expect to happen, what actually happens, and why you
don't think that's right.

Give some examples of strings on which it should work but doesn't.
Give some examples of strings on which it shouldn't work but does.


All that aside, are you escaping the escape character--so that C#
doesn't digest your \ ? That is, you have the following, right?

^([1-9]{1}|[1-9]{1}[0-9]{1}|100)\\.( etc. )$

That is, \\. instead of \.
By the way, the {1} quantifiers are redundant. You could probably get
away with the following:

Regex r = new Regex("^([1-9][0-9]?|100)\\.([0-9]{1,3})$");
That regex looks for:
* the start of the string

then either

* one digit between 1 and 9
* and, optionally, one digit between 0 and 9

or

* the string 100

* a decimal point

* between one and three digits, each between 0 and 9

* the end of the string

[Michael Mayer]

see also Eric Gunnerson's Regular Expression workbench. This is quite
useful for figuring out what your expression is doing and getting it
to work.

http://www.gotdotnet.com/Community/U...1-4ee2729d7322

As guiulio mentioned, make sure you either escape your backslashes
(\\) or to make life simpler, always use @ in front of the whole
string.

string pattern = @"^mypatter\.wi th[1-9]funky\.characte rs$";

-mike mayer

"giulio santorini" <gi************ **@yahoo.it> wrote in message
news:09******** *************** *****@phx.gbl.. .

Hi,
I would like to build a regular expression that allows
only a number with 3 integer the decimals separator and
other three decimals.
I've build the firt part in this way:
^([1-9]{1}|[1-9]{1}[0-9]{1}|100)$

Now I'am tring to build the second one but... it's quite
difficult.
Somebody could help me? This is what I've done:
^([1-9]{1}|[1-9]{1}[0-9]{1}|100)\.([0-9]{1}|[0-9]{2}|[0-9]
{3})$

But it doesn't work as I would... :-\
Thanks in advance!