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

Substitution

Processing...

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"((?:""group1""|\G(?!^))(?:(?!""group2""|""variable"").)*""variable"":)\d*"; string substitution = @"${1}10"; string input = @"{""mastercont"":{""subcont"":368,""whatever"":236,""anothergroup"":{""ItemsG1"":[""cf8013791a1948e9ad7ec913353cf108"",""7093f33afa794316af1a6e43d3e3e42f"",""38670584b898415e9e2e3b2dee39610c"",""d4d17e6a40ee4b4187a421ac230b6bb0"",""053c112d38384fa6bff09c01fa48f10d""],""items"":[{""id"":""14cec419535e449e9d367cb89dfe9b45"",""Template"":""4fdf0640c1094f6cad1d37c332d01180"",""var3"":10,""var2"":3035385,""prop"":{""group1"":[{""id"":""e4d9f3206a0d4dd3947a9ab887e2a866"",""variable"":8},{""id"":""33f866a5f2f546afac13fa5f02bedfbf"",""variable"":8}]}},{""id"":""a5c48bf889cd4a609ef32582c034a137"",""Template"":""023bbfbbd15646ce8eb92cad079142fd"",""var3"":10,""var2"":2627635,""prop"":{""group1"":[{""id"":""b4de8d1bd8a145758517c1e5800a7525"",""variable"":5}]}},{""id"":""4266dd790972412b8202506f82f07bce"",""Template"":""d501df0303664ee798085626d1b5f58a"",""var3"":10,""var2"":2687981,""prop"":{""group1"":[{""id"":""c40ed85187774d09b1690223dae8f67d"",""variable"":7},{""id"":""1674a05b355a4c0199947a28e2654d4c"",""variable"":7},{""id"":""bf107d7d87774411b07a56819a58a709"",""variable"":7}]}},{""id"":""8d9215eb57bd4a9c97c97042602f7385"",""Template"":""0e24274c1f9f4a75b72459237776a6f5"",""var3"":10,""var2"":2776081,""prop"":{""group1"":[{""id"":""464bedb7a63143b6a2dff65f089d39da"",""variable"":7}]}},{""id"":""d461eb38afc445b4be85c8fd9ca4b61e"",""Template"":""12ab90763c034e628f89f36fbe08bd0c"",""var3"":10,""var2"":3991635,""prop"":{""group1"":[{""id"":""848e02b432ae4e1b809c83bca039542a"",""variable"":10}]}}]},""loadout"":{""equippedItems"":{""48021ab1a1a6487b80a4ca472a4d0c77"":{""id"":""cf8013791a1948e9ad7ec913353cf108"",""Template"":""4535a4bf490a46d5b49ca9bc0cc81fe6"",""var3"":10,""var2"":287004,""prop"":{""group1"":[{""id"":""e4d9f3206a0d4dd3947a9ab887e2a866"",""variable"":10},{""id"":""c02cf3392c634456bdd1f4ad1e25bf3f"",""variable"":10},{""id"":""e8e0bb2627514cacbd20effdec8dea4d"",""variable"":10}]},""slot"":""48021ab1a1a6487b80a4ca472a4d0c77""},""36d141e47783466c95656f90f09de428"":{""id"":""f68adc253dff47f586ba5229b8ddfe81"",""Template"":""1ca7737c1eef462ab85d922dfb5eb5b6"",""grade"":3,""prop"":{""group1"":[{""id"":""80980773a3884f719ba5ac69a7e307be"",""variable"":9},{""id"":""2e56b62015ce4db29eef2faf139f6185"",""variable"":9},{""id"":""0717438e41e04414913ca089a60666c0"",""variable"":9}],""group2"":[{""id"":""ff35b37f7bc3455f81d73a2b60417ab5"",""variable"":1},{""id"":""2fc557411c8946cd85e2a8a27f6cea38"",""variable"":1},{""id"":""7ed4d49b50534a5dbbacb32a96871a85"",""variable"":1}]},""slot"":""36d141e47783466c95656f90f09de428""},""417e79dec81042f88273f9759df6ae25"":{""id"":""d4d17e6a40ee4b4187a421ac230b6bb0"",""Template"":""9094f0d120c84013ab3877177a009a78"",""var3"":10,""var2"":4109,""prop"":{""group1"":[{""id"":""c40ed85187774d09b1690223dae8f67d"",""variable"":7}]},""slot"":""417e79dec81042f88273f9759df6ae25""},""897a600c91d64449af09173da88a907e"":{""id"":""053c112d38384fa6bff09c01fa48f10d"",""Template"":""c74b89cb19cc45299c7eec6b53bcac17"",""var3"":10,""var2"":326029,""prop"":{""group1"":[{""id"":""e4d9f3206a0d4dd3947a9ab887e2a866"",""variable"":10}]},""slot"":""897a600c91d64449af09173da88a907e""},""862605dec67f4bceb5274e5fb6f25162"":{""id"":""21e4c1490f0c4c7bbe3b012a51823712"",""Template"":""875aa16e9d2646a0934e6ba5b2a5299f"",""var3"":10,""var2"":5044607,""prop"":{""group1"":[{""id"":""b64fa9d44f134bb4912916df08e84757"",""variable"":10},{""id"":""a869f868c23f45bb9159d62b42236a4a"",""variable"":10}]},""slot"":""862605dec67f4bceb5274e5fb6f25162""},""e273a4d7fb874f7e8f1e398be59afbcb"":{""id"":""7093f33afa794316af1a6e43d3e3e42f"",""Template"":""b73fa9abfdd049a08b16de3b8a8961fd"",""var3"":10,""var2"":287004,""prop"":{""group1"":[{""id"":""e4d9f3206a0d4dd3947a9ab887e2a866"",""variable"":10},{""id"":""c02cf3392c634456bdd1f4ad1e25bf3f"",""variable"":10}]},""slot"":""e273a4d7fb874f7e8f1e398be59afbcb""},""58b6d1212e234fa4b892c92ae2e2c4c5"":{""id"":""38670584b898415e9e2e3b2dee39610c"",""Template"":""67b78223916e440b8ec6fc14b83e1150"",""var3"":10,""var2"":417904,""prop"":{""group1"":[{""id"":""626121b7708d455fb32f38e5b68bb80c"",""variable"":9}]},""slot"":""58b6d1212e234fa4b892c92ae2e2c4c5""},""959c1931bf85458792ec8ecaa58b06d5"":{""id"":""8019f35c15744377ab99eb0b2ad87ec0"",""Template"":""d408a9123a4f4b2abf4da55b78910f08"",""grade"":5,""prop"":{""group1"":[{""id"":""626121b7708d455fb32f38e5b68bb80c"",""variable"":3},{""id"":""8fd72d413e824865b49eb576b8384aa9"",""variable"":3}],""group2"":[{""id"":""f17be1d91c1e451085143d108b92220f"",""variable"":2},{""id"":""0eec28838bc14fdda9398292b545e35d"",""variable"":2},{""id"":""d17491225ada4017918d990fc7717481"",""variable"":1}]},""slot"":""959c1931bf85458792ec8ecaa58b06d5""},""0d8f2023470141e88bd592381d787456"":{""id"":""c4fe7d61a70642afb4bd62b28add56cb"",""Template"":""d408a9123a4f4b2abf4da55b78910f08"",""grade"":3,""prop"":{""group1"":[{""id"":""626121b7708d455fb32f38e5b68bb80c"",""variable"":7},{""id"":""262ece9bbd654876b6985926ca4422be"",""variable"":7}],""group2"":[{""id"":""8e9928a8479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"; 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