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 = @"("".*?""|(?<=:)[^""][0-9]*[^""{}\[\],])|[{}:\[\],]"; string input = @"[ { ""JourneyCode"": ""TXT123AP3CL700036"", ""CONDITION"": ""Running Late"", ""earliestarrivalDate"": ""2017-09-01T14:03:00.001Z"", ""allowedconcessions"": [ { ""concessionname"": ""free champagne"", ""concessioncode"": ""Bolli-911"", ""activationState"": ""corkpopped"", ""expirydate"": ""2016-09-01T09:12:33.001Z"" } ], ""passenger"": { ""email"": ""user@example.com"", ""firstName"": ""John"", ""surname"": ""Doe"", ""phone"": 1234567890, ""language"": ""en-GB"", ""adress"": { ""street1"": ""10 Rue Morgue"", ""street2"": ""string"", ""street3"": ""string"", ""countyOrState"": ""Champagne"", ""city"": ""Epernay"", ""zip"": 123456, ""country"": ""France"" } }, ""ticket"": { ""Number"":""StarGla2Ber9ffh46438"", ""JourneyCode"": ""TXT123AP3CL700036"", ""class"": ""premium"", ""subclass"": ""HandleWithCare"", ""franchise"": ""Eurostar"", } } ] "; 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