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
Processing...

Test String

Substitution
Processing...

Code Generator

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(\w+)=(\w+)"; string substitution = @"""$1"":""$2"","; string input = @"{ ""request"": ""START_SIGNATURE"", ""request_id"": ""9876543210"", ""user"": ""{{user}}"", ""password"": ""{{password}}"", ""signature"": { ""config_id"": 12345, ""contract_id"": ""CompanyID1233456"", ""level"": [ { ""level_order"": 0, ""required_signatories_to_complete_level"": 2, ""signatories"": [ { ""phone"": ""+34666666666"", ""email"": ""signatory1@gmail.com"", ""name"": ""Nombre1"", ""surname"": ""Apellido1"", ""position_id"": ""1"" }, { ""phone"": ""+34677777777"", ""email"": ""signatory2@gmail.com"", ""name"": ""Nombre2"", ""surname"": ""Apellido2"", ""upload_files_registered"": ""Y"", ""position_id"": ""2"", ""upload_files"": [ { ""name"": ""Foto DNI"", ""optional"": ""Y"" } ] } ] }, { ""level_order"": 1, ""required_signatories_to_complete_level"": 1, ""signatories"": [ { ""phone"": ""+34688888888"", ""email"": ""signatory3@gmail.com"", ""name"": ""Nombre3"", ""surname"": ""Apellido3"", ""position_id"": ""3"" } ] } ], ""file"": [ { ""filename"": ""contract.pdf"", ""content"": ""{{base64_file_content}}"", ""file_group"": ""contract_files"", ""signature_position"": [ { ""signatory_position_id"": ""1"", ""page"": ""all"", ""x"": 40.0, ""y"": 50.0, ""height"": 20, ""width"": 30, ""rotation"": 0 }, { ""signatory_position_id"": ""2"", ""page"": ""4"", ""x"": 80.0, ""y"": 50.0, ""height"": 20, ""width"": 30, ""rotation"": 0 }, { ""signatory_position_id"": ""3"", ""page"": ""last"", ""x"": 60.0, ""y"": 120.0 } ] } ] } }"; RegexOptions options = RegexOptions.Multiline; Regex regex = new Regex(pattern, options); string result = regex.Replace(input, substitution); } }

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