C # common metacharacters in Regular Expressions

Table 1. Common metacharacters

Code	Description
.	Match any character except linefeed
\ W	Match letters, numbers, underscores, or Chinese Characters
\ S	Match any blank space character
\ D	Matching number
\ B	Start or end of a matching word
^	Start of matching string
$	End of matching string

.Is another metacharacters, matchingAny character except line breaks.*It is also a metacharacter, but it does not represent a character or a position, but a number-It specifies *The content of the front edge can be repeatedly used for any number of times to match the entire expression..