Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

`
`
gm

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(?s:(<a href=""onebook\.php\?novelid=([\d]+?)"".*?>(.*?)<\/a>.*?center"">(.+?)<.*?center"">(.+?)<.*?<td align=""right"">([\d]+?)<.*?<td align=""right"">([\d]+?)<\/td>))"; string input = @"<table width=""986"" border=""0"" align=""center"" cellpadding=""0"" cellspacing=""0"" class=""cytable""> <tbody> <tr> <td width=""126"" class=""sptd"">作者</td> <td width=""278"" class=""sptd"">作品</td> <td width=""168"" class=""sptd"">类型</td> <td width=""71"" class=""sptd"">风格</td> <td width=""63"" class=""sptd"">进度</td> <td width=""63"" class=""sptd"">字数</td> <td width=""73"" class=""sptd"">作品积分</td> <td width=""138"" class=""sptd"">发表时间</td> </tr> <tr> <td align=""left""> <a href=""oneauthor.php?authorid=385748"" target=""_blank"">君sola</a> </td> <td align=""left""> <a href=""onebook.php?novelid=1473506"" target=""_blank"" title=""简介：腹黑冰山美御姐与温柔黑化姑娘&#10;标签："">探虚陵现代篇</a> </td> <td align=""center""> 原创-百合-近代现代-爱情 </td> <td align=""center""> 正剧 </td> <td align=""center""> 连载中 </td> <td align=""right"">2996549</td> <td align=""right"">9653954560</td> <td align=""center"">2012-03-21 11:25:31</td> </tr> <tr> <td align=""left""> <a href=""oneauthor.php?authorid=1696863"" target=""_blank"">酒暖春深</a> </td> <td align=""left""> <a href=""onebook.php?novelid=4170491"" target=""_blank"" title=""简介：为生者权，替死者言&#10;标签："">我亲爱的法医小姐</a> </td> <td align=""center""> 原创-百合-近代现代-悬疑 </td> <td align=""center""> 正剧 </td> <td align=""center""> <font color='red'>已完成</font> </td> <td align=""right"">878082</td> <td align=""right"">3881133568</td> <td align=""center"">2019-08-29 20:00:00</td> </tr> "; RegexOptions options = RegexOptions.Multiline; foreach (Match m in Regex.Matches(input, pattern, options)) { Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index); } } }

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx