C # Regular Expressions

One, the regular expression of

The main purpose is to match the string. You can use an online regular expression, a regular expression plug-in, a regular expression class (Regex).

The basic syntax of regular expressions

\d: Digital

.: Any character (matches. You can use \.)

[ABC]: Match A or B or C

C{2}:C Repeat 2 times

C{2,3}c at least 2 times up to 3 times

*: 0 or more

c*: 0 or more C

c+: At least one

C?: either C or no

\s: Blank

\s: All Not spaces

^: Starting with what

$: End With what

(): Get

\w: Language characters

\w: In addition to language characters

\d: non-numeric characters

\b: Character bounds

C # Regular Expressions