Multiline Regex Question

[David Elliott]

I have an expression that works for single line but not multiline. What am I missing?

expression = "<div(?<data1>. *?)>(?<data2>.* ?)</div>";
MatchCollection mc = Regex.Matches(d ata, expression,
RegexOptions.Mu ltiline |
RegexOptions.Ig noreCase |
RegexOptions.Ig norePatternWhit espace);
Expression works if data looks like this:
<div id="bodyblktx10 ">5679664</div>
Result:
data1 -=> id="bodyblktx10 "
data2 -=> 5679664

Expression DOESN'T works if data looks like this:
<div id="bodyblktx10 ">

5679664

</div>
Thanks,
Dave
Da**********@Be llSouth.net

[Mark Mullin]

1) Multiline prop doesn't do what you think. It only affects eval of
^ and $

2) The default behavior of regex in matching \n with . is to __not__
be greedy, i.e. it does not consider \n to match . by default

Therefore (and oddly enough)
you want to replace RegexOptions.Mu ltiline with
RegexOptions.Si ngleline.

The official doco states

Specifies single-line mode. Changes the meaning of the period
character (.) so that it matches every character (instead of every
character except \n).

David Elliott <Da**********@B ellSouth.net> wrote in message news:<ll******* *************** **********@4ax. com>...

I have an expression that works for single line but not multiline. What am I missing?

expression = "<div(?<data1>. *?)>(?<data2>.* ?)</div>";
MatchCollection mc = Regex.Matches(d ata, expression,
RegexOptions.Mu ltiline |
RegexOptions.Ig noreCase |
RegexOptions.Ig norePatternWhit espace);
Expression works if data looks like this:
<div id="bodyblktx10 ">5679664</div>
Result:
data1 -=> id="bodyblktx10 "
data2 -=> 5679664

Expression DOESN'T works if data looks like this:
<div id="bodyblktx10 ">

5679664

</div>
Thanks,
Dave
Da**********@Be llSouth.net