Regular expressions is a set of syntax matching rules. Various languages, such as Perl,. Net, and Java, have their own shared Regular Expression Libraries. In. Net, this class library is called Regex.To put it simply, Regex is an application class
From http://hui06242007.blog.163.com/blog/static/46967621200851931436619/
C # RegEx in-depth Regular Expressions
Regular Expressions is a set of syntax matching rules. Various languages, such as Perl,. net, and Java, have their own shared Regular
The namespace using system. Text. regularexpressions needs to be introduced. (If this parameter is not introduced, system. Text. regularexpressions. RegEx must be written when RegEx is written)
Replace method of Regular Expression
String T = "sdf1234
The Regex class represents a regular expression that is not mutable (read-only). It also contains a variety of static methods that allow you to use other regular expression classes without explicitly creating instances of other classes.
Overview of
C # Regular Expression Regex class usage,
I. C # Regular Expression symbol Mode
Character
Description
\
Escape Character, escape a character with special functions into a common character, or vice versa
^
Match
Namespaces:System.Text.RegularExpressions
Initializing the Regex classRegex regex = new Regex (regular expression, Regexoptions.ignorecase | Regexoptions.multiline);IgnoreCase ignores case when matching, multiline adjusts the meaning of ^ and $ to
(4) RegEx, RegEx, and RegEx
Content of this chapter:
Decorator
Re Regular Expression
Decorator
The decorator is a well-known design model and is often used in scenarios with cut-plane requirements. It is more classic in terms of
C # Regular expression notation pattern
Characters
Description
\
An escape character that escapes a character with special functionality to a normal character, or vice versa
^
Match the
C # Regular expression notation pattern
Characters
Description
\
An escape character that escapes a character with special functionality to a normal character, or vice versa
^
Match the
JavaScript regular expressions have 3 modifiers of/I,/m, and/g. /I is the most common, and best understood, case-insensitive representation of regular expression matches.var regex =/abc/i;alert (Regex.test ("abc"));//true/ m stands for multiline
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