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 = @"activity\""\s+:\s+\{\s+(?<ACTIVITY_FIELDS>.*)\}\s+\}"; string input = @"""parts"" : [ { ""Mfg"" : ""SLF347"", ""Description"" : ""OP SYS"", ""quantity"" : 1, ""target"" : 0, ""Name"" : ""ACME"", ""quantityAT"" : 0, ""Mode"" : ""Manual"" }, { ""sku"" : ""8-45612-65423-0"", ""pDesc"" : ""INFOSERV"", ""quantity"" : 1, ""Name"" : ""ACME"", ""Mode"" : ""Manual"" } ], ""region"" : ""US"", ""scheduled"" : false, ""LevelEpoch"" : ""1570750199"", ""account"" : { ""channel"" : ""USPA"" }, ""activity"" : { ""dNumber"" : 718526123, ""build"" : 12, ""TimeZone"" : ""GMT-08:00"", ""description"" : ""Windows 10"", ""groupName"" : ""WestGroup"", ""id"" : ""A-2KJLSJRHE"", ""priority"" : ""Low"", ""reasonCode"" : ""GH5HTH"", ""recordType"" : ""Fix"", ""status"" : ""DCNR"", ""statusDescription"" : ""Def Request"", ""solution"" : ""Re-install"", ""AgencyRev"" : false, ""statusDateEpoch"" : ""1573715886"", ""rCount"" : 1, ""arrivalTimezone"" : ""GMT-06:00"", ""Start"" : 1569938400000, ""End"" : 1571097540000, ""Used"" : ""Y"", ""laborCode"" : ""Ackgd"", ""partCode"" : ""Ced"", ""note"" : ""Issue Description : Re-Install"", ""owner"" : { ""BU"" : 0, ""certFlag"" : false, ""name"" : ""John Doe"", ""Id"" : 0 }, ""environment"" : ""None"", ""subEnvironment"" : ""Other"", ""serialNumber"" : ""ADN0970234529387509237"", ""UID"" : ""B-4FJFLL"", ""DateEpoch"" : ""1569701589"", ""repeat"" : ""N"", ""servAtt"" : { ""ServiceType"" : ""Fix"", ""ServiceSubType"" : ""WH"", ""Billable"" : ""N"", ""CompleteUnit"" : ""N"", ""OutHour"" : ""N"", ""OutWarranty"" : ""N"", ""ServHour"" : ""365x24x7"", ""Level"" : ""10"", ""ProviderId"" : ""LEK"", ""ServpProvider"" : ""LEK"", ""System"" : ""Notebook"", ""Deferred"" : ""No"", ""Cover"" : ""5-10x5"", ""ScheduleFlag"" : ""N"", ""Component"" : ""N"" } }, ""address"" : { ""address"" : ""1 Main St"", ""address1"" : ""1 Main St"", ""city"" : ""Nowhere"", ""country"" : ""US"", ""postalCode"" : ""12345"", ""region"" : ""US"", ""state"" : ""ZZ"", ""timeZone"" : ""GMT-08:00"" }"; 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