C#中【正则表达式regular expression】相关的知识

Regex

System.Text.RegularExpressions.Regex      regex应该是regular expression的缩写

https://msdn.microsoft.com/zh-cn/library/system.text.regularexpressions.regex(v=vs.110).aspx

Represents an immutable regular expression.【immutable 不可变的】 代表了不可变的正则表达式

The Regex class represents the .NET Framework's regular expression engine.  //Regex类代表了.net framework中正则表达式工具

It can be used to quickly parse large amounts of text to find specific character patterns;//它可以用来快速解析大量文本来找到特殊的字形

to extract, edit, replace, or delete text substrings;  //来提取，编辑，替代或删除文本的子字符串

and to add the extracted strings to a collection to generate a report. //也可以将提取到的字符串添加到一个集合来生成一个报告

RegexStringValidator 

System.Configuration.RegexStringValidator

Provides validation of a string based on the rules provided by a regular expression.  //根据正则表达式提供的规则，验证字符串的有效性

正则表达式的匹配规则

https://msdn.microsoft.com/zh-cn/library/az24scfc(v=vs.110).aspx