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 = @"\""ruleGroupId\"":\s*\""(?<ruleGroupId>[^\""]+)\"",[\r\n](.+[\r\n]){2}(\""excludedRules\""\:\s\[)([\r\n].+)[\r\n]\""exclusionType\""\:\s*\""(?<exclusionTpe>[^\""]+)"; string input = @"{ ""timestamp"": 1646229254523, ""formatVersion"": 1, ""webaclId"": ""arn:aws:wafv2:us-east-1:111111:regional/webacl/alb-stage-web-acl/26ac170c-03c4-4fd7-8fab-86e346789fef"", ""terminatingRuleId"": ""Default_Action"", ""terminatingRuleType"": ""REGULAR"", ""action"": ""ALLOW"", ""terminatingRuleMatchDetails"": [], ""httpSourceName"": ""ALB"", ""httpSourceId"": ""182116744736-app/ALB-Stage/fcc1f5f9483b035e"", ""ruleGroupList"": [ { ""ruleGroupId"": ""AWS#AWSManagedRulesAmazonIpReputationList"", ""terminatingRule"": null, ""nonTerminatingMatchingRules"": [], ""excludedRules"": null }, { ""ruleGroupId"": ""AWS#AWSManagedRulesBotControlRuleSet"", ""terminatingRule"": null, ""nonTerminatingMatchingRules"": [], ""excludedRules"": null }, { ""ruleGroupId"": ""AWS#AWSManagedRulesCommonRuleSet"", ""terminatingRule"": null, ""nonTerminatingMatchingRules"": [], ""excludedRules"": [ { ""exclusionType"": ""EXCLUDED_AS_COUNT"", ""ruleId"": ""SizeRestrictions_BODY"" } ] }, { ""ruleGroupId"": ""AWS#AWSManagedRulesKnownBadInputsRuleSet"", ""terminatingRule"": null, ""nonTerminatingMatchingRules"": [], ""excludedRules"": null } ], ""rateBasedRuleList"": [], ""nonTerminatingMatchingRules"": [], ""requestHeadersInserted"": null, ""responseCodeSent"": null, ""httpRequest"": { ""clientIp"": ""67.218.14.10"", ""country"": ""US"", ""headers"": [ { ""name"": ""host"", ""value"": ""sample.com"" }, { ""name"": ""content-length"", ""value"": ""50362"" }, { ""name"": ""cache-control"", ""value"": ""max-age=0"" }, { ""name"": ""sec-ch-ua"", ""value"": ""\"" Not A;Brand\"";v=\""99\"", \""Chromium\"";v=\""98\"", \""Microsoft Edge\"";v=\""98\"" }, { ""name"": ""sec-ch-ua-mobile"", ""value"": ""?0"" }, { ""name"": ""sec-ch-ua-platform"", ""value"": ""\""Windows\"" }, { ""name"": ""origin"", ""value"": ""https://sample.com"" }, { ""name"": ""upgrade-insecure-requests"", ""value"": ""1"" }, { ""name"": ""dnt"", ""value"": ""1"" }, { ""name"": ""content-type"", ""value"": ""multipart/form-data; boundary=----WebKitFormBoundaryuXOFvh7iQjJkEJHm"" }, { ""name"": ""user-agent"", ""value"": ""Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36 Edg/98.0.1108.62"" }, { ""name"": ""accept"", ""value"": ""text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9"" }, { ""name"": ""sec-fetch-site"", ""value"": ""same-origin"" }, { ""name"": ""sec-fetch-mode"", ""value"": ""navigate"" }, { ""name"": ""sec-fetch-user"", ""value"": ""?1"" }, { ""name"": ""sec-fetch-dest"", ""value"": ""document"" }, { ""name"": ""referer"", ""value"": ""https://sample.com/DischargeDetail.aspx"" }, { ""name"": ""accept-encoding"", ""value"": ""gzip, deflate, br"" }, { ""name"": ""accept-language"", ""value"": ""en-US,en;q=0.9"" }, { ""name"": ""cookie"", ""value"": ""_ga=GA1.3.84334902.1642521795; __RequestVerificationToken=-8kinKddCjKCZTws-wPmXDZTFg39urggswPnYm5Y15UwfIjspHqTj1hOPAXIaRPHL2cupyt2vO4Gb5QUExZGd6e5djS0v81kxt2pH22Ow9XiJYr2NPWB_BdQb-VmCUHVXbiVZZ5NwTfGDrXd2O0uD_gba4fM3PhkQUO5f9zs5381; _gid=GA1.2.249665053.1645964709; _ga_33R15ZN4N1=GS1.1.1645965393.6.0.1645965397.56; _ga=GA1.2.84334902.1642521795; ASP.NET_SessionId=1fnikipv2poi14r3doy4kb2w"" } ], ""uri"": ""/ReleaseRequest.aspx"", ""args"": "", ""httpVersion"": ""HTTP/2.0"", ""httpMethod"": ""POST"", ""requestId"": ""1-621f7706-5e8f4ea33e2dc0cc66b98797"" } }"; 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