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

/
/
g

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(?s)(?<=<br><b>).+?(?=<br>)"; string input = @" </table> </td> </tr> <tr bgcolor=""#257fba""> <td height=""17"" colspan=""5"" valign=""top"" align=""right""><font color=""#FFFFFF"">Dienstag Sonnenscheindauer:</font></td> <td height=""17"" colspan=""1"" valign=""bottom"" align=""center""><font color=""#FFFFFF"">6-7 Stunden</font></td> </tr> <tr bgcolor=""#257fba""> <td height=""17"" colspan=""5"" valign=""top"" align=""right""><font color=""#FFFFFF"">Niederschlags-Wahrscheinlichkeit:&nbsp;</font></td> <td height=""17"" colspan=""1"" valign=""bottom"" align=""center""><font color=""#FFFFFF"">52 %</font></td> </tr> <tr> <td colspan=""6"" align=""left""> <br><b>Das Wetter in Reutlingen am Dienstag, 28.3.2017:</b> Am Vormittag wechselnd bew&ouml;lkt bei 15 Grad, nachmittags sind neben Wolkenl&uuml;cken bei 18 Grad auch Schauer m&ouml;glich. Die Nacht verl&auml;uft wechselnd bew&ouml;lkt bei Werten um 6 Grad.<br><br> </td> </tr> <tr> <td colspan=""4"" align=""right""> <center> <button type=""button"" class=""btn btn-default""><span class=""glyphicon glyphicon-arrow-left""></span> Tag</button> <a href=""/wetter/morgen/reutlingen/DE23046.html""><button type=""button"" class=""btn btn-primary"">Tag <span class=""glyphicon glyphicon-arrow-right""></span></button></a> </center> </td> <td colspan=""2"" align=""right""> <table border=""0"" cellpadding=""0"" cellspacing=""0""> <tr> "; foreach (Match m in Regex.Matches(input, pattern)) { 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