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

/
/
sgm

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(<ptS[a-zA-Z]*Text[a-zA-Z0-9\/=\+\n\t\r\0 ""]+>)([a-zA-Z0-9\/=+\n\t\r\0 &#;\-\.\(\),:£]+)(<\/ptS[a-zA-Z]*Text[a-zA-Z0-9\/=\+\n\t\r\0 ""]*>)"; string input = @"<CDBText id=""(0:0-51181)""> <dwRefTextOrdner>5622</dwRefTextOrdner> <dwRefMitarbeiter>0</dwRefMitarbeiter> <ptSName code=""None"" lang=""en"">OWN_Text 15</ptSName> <dBreite>21</dBreite> <dHoehe>29.699999999999999</dHoehe> <dOben>2</dOben> <dUnten>2</dUnten> <dLinks>2</dLinks> <dRechts>2</dRechts> <cHochQuerformat>0x00</cHochQuerformat> <cPapierSchacht>0</cPapierSchacht> <cPapierSchachtErsteSeite>0</cPapierSchachtErsteSeite> <ptSDruckername code=""None"" lang=""en""></ptSDruckername> <ptDErstellungsdatum>Thu 04.Sep 2008</ptDErstellungsdatum> <ptDSpeicherungsdatum>Thu 04.Sep 2008</ptDSpeicherungsdatum> <ptTSpeicherungszeit>10:10:10 am</ptTSpeicherungszeit> <nVersion>3</nVersion> <ptSTitel code=""None"" lang=""en""></ptSTitel> <ptSThema code=""None"" lang=""en""></ptSThema> <ptSAutor code=""None"" lang=""en"">ld</ptSAutor> <ptSKommentar code=""None"" lang=""en""></ptSKommentar> <cGeschuetzt>0x00</cGeschuetzt> <cDBTextDaten><xref refid=""(0:0-51182)""/></cDBTextDaten> </CDBText> <CDBTextDaten id=""(0:0-51182)""> <ptBKopfzeileText len=""0"" crc=""0""> </ptBKopfzeileText> <ptSKopfzeileText code=""None"" lang=""en""></ptSKopfzeileText> <ptBKopfzeileFormat len=""0"" crc=""0""> </ptBKopfzeileFormat> <ptBFusszeileText len=""0"" crc=""0""> </ptBFusszeileText> <ptSFusszeileText code=""None"" lang=""en""></ptSFusszeileText> <ptBFusszeileFormat len=""0"" crc=""0""> </ptBFusszeileFormat> <ptBMitteText len=""1031"" crc=""3139242066""> 8PHw/1BLAwQUAAAACABFUSQ5KkncyMoCAADTBAAAKwBwAERPQ1VNRX4xL0NBVENM SX4xL0xPQ0FMU34xL1RlbXAvMi9ibG8zMC50bXBTRFsApAAAAAAIALXyphxjZGBp EGFgYDBggAAfIGZkBTNZRYFE/LvcS4ufyjZ5Wa+KSmHBLcfIxMDAxBDBwAyWlmD4 zyjPABIDqVUAEgpgtghEnBEiLgSmVCBieOwEAFVUDQAH8qW/SPKlv0jypb9IbVPd TtswFO7dtEp9h3MJoi0dGruAq6pkUIlS1HYgLt3kJDF17M52ChGPw4vus1MG+6kU p3KOfb6/M5nfLJObFX2fL2bU6xKeT/j9uYZ3r3vP5Lw1ulANWU5NVbHOyJfCk1CK tuwdCctUbwfeDDLhmZ6kL2kn0lRq4aXRjtacG9SIrJLOYWfY694qFg5bbkMyp8bU 7S3a1Xg9lexLtmHbUmYKMpZSdJSO8loBydYaz6nnDDcB/CK5Tu7GIDRLLqaT8TVd TZer+eKByDFH2DZzRAeFcQDiy8PADuduF/NJcvFjkdAla7ZCkdCCHXp7mfbJpUIB IvhujZKupCPiZ29FGliRyYnW1mxYkzfGl306Oh6guiETwb+Xutis1fPt6XWnVMgd UwU2bPfCEOBBXDRdG3wDzZSzoEgAUeuMrfPio/6uTsv3MgeVrG1IkKvCV1YMu3yA aqXbDEPTv2+ZWJN7ugs+1jAkNF9DAjJbaSSYC6kpNRoZgDo7IZVY70XBrgu3exNP hdNo5Eu45ETe1nCew6fAs6wroSmzdUG4MbL2w2ErSyvIPf83YcgQurgWeGGkLqgS j9AJUSnYNn1it+VUihAMo1AUU9kvBboKWitjcF2g9Fhj+ZBFLRFt8WamoOLfEAxb pzJDx2HRxgPjz1qGG6A7DwzME5Fg28illrn1seVIy2iF0BJvRwd7PpRLxYdnN6Li 8y+jb6ej/To6/3qOuHzudceXiySZhTFdzel2/NDrJsvVdDZeJWdEryejEQ3o5OQ0 AoyjEYYlBDVtgiUIxU5mTKlq5YtTCQcwl7UNY5pjNEATsDyD5pV54h3bfvQSfxrC 9IbohZzv2LPFOGO34kxislt79xbAkA3CJwGj2hokOUQkYgjFHklxQMDPGAfVxBSK AjLFEtFEm4EGDELUlOLfA7aPSZuRfUyWstCcnb3lptN56Ww6L78AUEsBAhcLFAAA AAgARVEkOSpJ3MjKAgAA0wQAACsAEQAAAAAAAAAgALaBAAAAAERPQ1VNRX4xL0NB VENMSX4xL0xPQ0FMU34xL1RlbXAvMi9ibG8zMC50bXBTRAQApAAAAFVUBQAH8qW/ SFBLBQYAAAAAAQABAGoAAACDAwAAAAA= </ptBMitteText> <ptSMitteText code=""None"" lang=""en"">CONSENT FORM &#59549; &#59549; &#59543;&#59543;&#59543;&#59543;&#59549; &#59543;&#59543;&#59543;&#59543;&#59549; &#59543;&#59543;&#59543;&#59543;&#59549; &#59549; &#59543;&#59543;&#59549; We strongly recommend that all pets are up-to-date with vaccinations before admission.&#59549; Please ask if you are unsure whether your dog or cat is fully protected.&#59549; &#59549; RELEVANT MEDICAL HISTORY see records (gosforth)&#59549; &#59549; &#59549; PROCEDURE General anaesthetic, scale and polish + extraction of broken tooth, +/- any other extractions&#59549; &#59549; &#59549; &#59543;&#59543;&#59549; &#59543;&#59543;&#59549; &#59543;&#59543;&#59549; &#59549; I give my permission for the above procedure and understand that all such procedures carry a small element of risk.&#59549; I understand that Croft Vets use the best opioid pain control available and consent to the use of this safe and effective human drug in my pet..&#59549; &#59549; &#59543;&#59543;&#59543;&#59543;&#59549; &#59549; We recommend that all patients undergoing major surgery, especially older pets,have a blood test just before administration of a general anaesthetic.&#59549; &#59549; I do / do not require a pre-operative blood screen for my pet Small animals (patient file):Name;10650;10650;0;4;&#59549; &#59549; AGREEMENT TO PAY&#59549; ESTIMATE: £200 - 225&#59549; &#59549; It is our policy to provide clients with an accurate fee estimate.&#59549; However, the very nature of veterinary medicine and surgery makes it impossible to predict costs exactly.&#59549; I agree to pay all fees on collection of my pet.&#59549; &#59543;&#59543;&#59543;&#59543;&#59543;&#59543;&#59543;&#59549; &#59549; Signed:&#59549; &#59543;&#59543;&#59543;&#59543;&#59549; </ptSMitteText> <ptBMitteFormat len=""3251"" crc=""1808381608""> 8PHw/1BLAwQUAAAACABFUSQ5oClCBnYLAADi2AAAKwBwAERPQ1VNRX4xL0NBVENM SX4xL0xPQ0FMU34xL1RlbXAvMi9ibG8zMi50bXBTRFsApAAAAAAIALXyphxjZGBp EGFgYDBggAAfIGZkBTNZRYFE/LvcS4ufyjZ5Wa+KSmHBLcfIxMDAxBDBwAyWlmD4 zyjPABIDqVUAEgpgtghEnBEiLgSmVCBieOwEAFVUDQAH8qW/SPKlv0jypb9I7Z1t bFPXGcef67w4kGDyWigwdLclDVAgdgghYFCXF0MCxPFigwfTNJzklhjyArG7JkVd sqoKrVStUVWh7kNbTxVSPmzSmKjEuk6DghhFCBDSNqQhTXwaK5rGh6mbKrq759xr c+17bcfOPcaJ9jzm75fjc849vjnc3/Occ3xcMLkBAEQoxvuNwkbhtvW2dbBtYOBB gQ3WwZ9lUGxGYPeFAJW+4LAUEt3Sy2Lv6HBgBAyWpJDYOhYMDEFGhT61gJDZkQrs cNNMoVjzBEOhI8LG53fD7+8eEa5+eHP/Jx/DWrg/Z6FN8N+P33115tIlJYelMPEz ZVhI0I6URaGEE5FpIRH+mn2h+M8kZNgjimrhL9kfSSukWkanPP5IGTfvTPQJlpRl 9UG5RV+yO5jEf5Pqg3KLvsS7ixcvghyJgHwT9XUEbskRiCi6hZIhcgsVkeEWSo58 jboJst8P8puoK6jHfrgh++EtlF/R26jPUTL4P0e9jfLL8BbqBkr2P0ZdQb0Jss0G chvqNdRnqK9scF22wTRqN8qmaC9qGnUVJYPtKmoatRdlk2E3ahp1HSXbvkJ9hnoN 1QZX8HNeEVGdqDHU+6hLAB/hGxMoN6pWycRUi3KjJlARFCZGjBlrUW7UBOoj1BW4 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9VOKjTSlqDaPSEWkYkakIlLlckqxGiOzL+uMSzTPQRNUW2YLNwNT3wTPKcX3hM1Q cn2yhM+UYks0GvOaqmWRTSkyMLbucdFX79TmES2JlsyIlkTLxRnXeaIUO6BLX4BT fPjHSR/XsSFdcfRFsS84Fh7UR3h2+hKe2jxiFjGLGTGLmJXLCK8GI7yW5+IjvJ1x M3ZaxMczwmt0xp4NRrnm1+VYgHNlbL1Qh8vb3tvl8XX1uHeINGkGBKrsChGoCFQE qsz3FGOmBVfLcjxpdkiXOvekmQB5NV7bnzFL/CgWLmOvv4rS/fumapn/2OvE0jz4 Cay/Hmxtb+9ytzI/QfT6Wn0HvKmHYicryFsgb4G8BfIWyFsw4y1UKf1K8xaqcuwt /ECXmh5Fv12dB2+BLet56YQYHhUHAmEpJYH+2UAEIgIRgYhARCAzBFqq9CuNQOy1 es3nSaCD89xp+2TCq9lidhUuirZZs7vFrN3GdGa1hvROLrt+qzXp6xa4hbcC6Nnr 4FL3I+UcCoYQs8TKtmwzpqttMabzDOP1R+N5DhNtkFvdg4Zzkst25/J88xk2uWBR Pcwfmqpl/sMmryzJw7AJ+6PEdo3v8btdvWkmWH63nBxWcljJYSWHlRxWMw6rernX HNblOR4yCehS02PokzWcG5GJ/QzV/lIoPDosjRlWrvmC4SG2azxa9J5tMyGmzL87 OBYKiyPqVvPxhZrTFNofSF6myQlfpODhOQfxkHhIPCQeEg/N8LBI6VcqDzthRb0A ryesjGuIrow7AomB5TisxLyXE/I2RfPOgD4IfQbzWuvj86q7XUyX2P82VaJd108Y un7urBwuwxtQaeETwD5QAth7K8xNeCyyAJaNhLV2dPS6vF4thqUQFgjZ2RUiZBOy CdmZIrtC6VdaCFuR0xC2oUaPtAUYwv4c0oSw3vCYJIV1oaWj0bkxdUDqG315pKE/ 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movhV1RvK+ypX5nIHkHHGv3jI8g7NB8oDT+Zgvb6hR+xxxWWvDccilnDX83QTYl9 kC/z4aaw38o9GAwFGlr7+6VQKOWiyqtWgj5Bn6BP0Cfom4G+OiMV26GA/epA4uiv hozcLKpU14ecWJWdM/AQ8s5UXtMbkGy4fV51G2u3Gurm802PI4o/Ub8mX0P5/86H Z8IOyNYApR69/wP5JOSTkE9CPgmQT8JrA2Clq+VoIGJcwdgeA8bSw+fO8jzAh8Pa 1H+sIjoRnYhORCeiE9+1qbE9/RilYmtTNVOf84yeY/ub44VLIdi6Ob6SqH/cVpSn gd32Qan/uDQg9k2kDqJaSghThCnCFGGKMMVrYJdZaU43sqvO8lvxTWWLdAA3menX vv8PUEsBAhcLFAAAAAgARVEkOaApQgZ2CwAA4tgAACsAEQAAAAAAAAAgALaBAAAA AERPQ1VNRX4xL0NBVENMSX4xL0xPQ0FMU34xL1RlbXAvMi9ibG8zMi50bXBTRAQA pAAAAFVUBQAH8qW/SFBLBQYAAAAAAQABAGoAAAAvDAAAAAA= </ptBMitteFormat> </CDBTextDaten> "; RegexOptions options = RegexOptions.Singleline | 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