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

/
/
g

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(?ms)<PNR>([\w]+)<\/PNR> "; string input = @"<?xml version=""1.0"" encoding=""UTF-8"" standalone=""yes""?> <EGE_Booking> <TripID>1004-3637-360</TripID> <RecordLocator>1004-3637-360</RecordLocator> <Travelers> <Traveler> <PerCode>13593199</PerCode> <FirstName>Claude</FirstName> <LastName>Christensson</LastName> <ContactDetails> <Email>claude.christensson@wirelesscar.com</Email> <MobilePhone>46765537005</MobilePhone> </ContactDetails> <TravellerCostCenter> <CostCenter Code=""CC3""> <Label>Employee ID</Label> <Value>56524</Value> </CostCenter> <CostCenter Code=""CC4""> <Label>Global Department code</Label> <Value>DI43400</Value> </CostCenter> </TravellerCostCenter> </Traveler> </Travelers> <Segments> <HotelSegment> <HOTEL> <TripItemID>5a7dc8f971ac0163f7563e7e</TripItemID> <PNR>ABC1DS</PNR> <Status>V</Status> <CheckInDate>2018-02-13</CheckInDate> <CheckOutDate>2018-02-14</CheckOutDate> <Vendor SupplierType=""11281422"">Genting Hotel</Vendor> <PropertyName>Genting Hotel</PropertyName> <Location> <Name>Pendigo Way, England, B40 1PU</Name> <City>Birmingham</City> <Country Code=""GBR"">Storbritannien</Country> </Location> <ConfirmationCode>982674693</ConfirmationCode> <Cost> <Amount>751.08</Amount> <Currency Code=""SEK"">Swedish Krona</Currency> </Cost> <OutOfPolicyReasons/> </HOTEL> <HOTEL> <TripItemID>5a7dc8f971ac0163f7563e7e</TripItemID> <PNR>55545261643</PNR> <Status>V</Status> <CheckInDate>2018-02-13</CheckInDate> <CheckOutDate>2018-02-14</CheckOutDate> <Vendor SupplierType=""11281422"">Genting Hotel</Vendor> <PropertyName>Genting Hotel</PropertyName> <Location> <Name>Pendigo Way, England, B40 1PU</Name> <City>Birmingham</City> <Country Code=""GBR"">Storbritannien</Country> </Location> <ConfirmationCode>982674693</ConfirmationCode> <Cost> <Amount>751.08</Amount> <Currency Code=""SEK"">Swedish Krona</Currency> </Cost> <OutOfPolicyReasons/> </HOTEL> </HotelSegment> </Segments> <Invoicing> <CompanyCode>28781</CompanyCode> <ClientNumber>28781</ClientNumber> <ClientRequisition>claude.christensson@wirelesscar.com</ClientRequisition> <ClientReference>689100277</ClientReference> <ClientCostCenter> <CostCenter Code=""CC1""> <Label>Legal Entity</Label> <Value>WirelessCar Sweden AB</Value> </CostCenter> <CostCenter Code=""CC2""> <Label>Cost Center</Label> <Value>989502</Value> </CostCenter> </ClientCostCenter> </Invoicing> </EGE_Booking> "; foreach (Match m in Regex.Matches(input, pattern)) { 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