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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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 = @/ (?ms)\<test\s(?P<tmp>.*?)\<\/test\> /; string input = @"<?xml version=""1.0"" encoding=""UTF-8"" ?> <unitData endtime=""2019-09-30T05:39:08+02:00"" equipment=""eq1"" equipmentClass=""eqc1"" locale=""german"" operator=""ADMINISTRATOR"" senderID=""sender1"" starttime=""2019-09-30T05:38:09+02:00"" state=""nok"" unit=""74375513159930675"" xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xsi:noNamespaceSchemaLocation=""unitData-1.1.xsd""> <subUnitData position=""1"" positionType=""Panel Nr."" state=""ok"" subUnit=""74375513159930675""> <test description=""A10-007 7437551"" name=""CU102_BAY2_QR"" testResultCode=""passed""> <subTest name=""Verbindung zum Pr³fling aufbauen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Initialisierung"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Fehlerflag lesen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""ID lesen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Sachnummer lesen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Trigger setzen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""ADC Abschalten"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> </test> </subUnitData> <subUnitData position=""2"" positionType=""Panel Nr."" state=""ok"" subUnit=""74375513159930676""> <test description=""A10-007 7437551"" name=""CU102_BAY2_QR"" testResultCode=""passed""> <subTest name=""Verbindung zum Pr³fling aufbauen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Initialisierung"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Fehlerflag lesen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""ID lesen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Sachnummer lesen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Trigger setzen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""ADC Abschalten"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> </test> </subUnitData> <subUnitData position=""3"" positionType=""Panel Nr."" state=""ok"" subUnit=""74375513159930678""> <test description=""A10-007 7437551"" name=""CU102_BAY2_QR"" testResultCode=""passed""> <subTest name=""Verbindung zum Pr³fling aufbauen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Initialisierung"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Fehlerflag lesen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""ID lesen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Sachnummer lesen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""Trigger setzen"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> <subTest name=""ADC Abschalten"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> </test> </subUnitData> <subUnitData position=""4"" positionType=""Panel Nr."" state=""nok"" subUnit=""74375513159930677""> <test description=""A10-007 7437551"" name=""CU102_BAY2_QR"" testResultCode=""failed""> <subTest name=""FLOAT"" testPosition=""unknown""> <subPositions> <subPosition name=""{27}""/> </subPositions> <subTestResult testResultClass=""fail"" testResultCode=""failed""/> </subTest> <subTest name=""Components not tested"" testPosition=""unknown""> <subTestResult testResultClass=""pass"" testResultCode=""passed""/> </subTest> </test> </subUnitData> </unitData> "; 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