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 ASP.NET Articles
  In the table below we list the characters used in .Net regular expressions, together with their meaning,

Character Meaning
\n, \r, \t Match literal new line, carriage return, tab
\\, \/, \*, \+, \?, etc. Match a special character literally, ignoring or escaping its special meaning.
[...] Match any one character between brackets.
[^...] Match any one character ot between brackets.
. Match any character other than newline.
\w, \W Match any word/non-word character.
\s, \S Match any white space/non-white space.
\d, \D Match and digit/non-digit.
^, $ Require match at beginning/end of a string, or in multi-line mode beginning/end of a line.
\b, \B Require match at word boundary/non-boundary.
? Optional term: Match zero or one time.
+ Match previous term one or more times
* Match term zero or more times
{n} Match previous exactly n times.
{n,} Match previous term n or more times.
{n,m} Match at least n but no more than m times.
a | b Match either a or b.
(sub) Group sub expression sub into a single term, and remember the text that it matched.
\n Match exactly the same characters that were matched by sub expression number n.
$n In replacement strings, substitute the text that matched the nth sub-expression.

NAT July 2005 (Revised)


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