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

r"
"
gm

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(?<=\w):(?=\w[^<>]*>)(?!\w+=)"; string input = @"<ns:Documents xmlns:ttn=""http://fsrar.ru/WEGAIS/ReplyNoAnswerTTN"" xmlns:ns=""http://fsrar.ru/WEGAIS/WB_DOC_SINGLE_01"" class="" FB_FW_ext BlitzScPluginAdapter""> <ns:Owner> <ns:FSRAR_ID>3463047</ns:FSRAR_ID> </ns:Owner> <ns:Document> <ns:ReplyNoAnswerTTN xmlns:ttn=""http://fsrar.ru/WEGAIS/ReplyNoAnswerTTN"" xmlns:ns=""http://fsrar.ru/WEGAIS/WB_DOC_SINGLE_01"" xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance""> <ttn:Consignee>030000414982</ttn:Consignee> <ttn:ReplyDate>2020-09-09T15:30:17.893</ttn:ReplyDate> <ttn:ttnlist xmlns:ttn=""http://fsrar.ru/WEGAIS/ReplyNoAnswerTTN"" xmlns:ns=""http://fsrar.ru/WEGAIS/WB_DOC_SINGLE_01"" xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance""> <ttn:NoAnswer xmlns:ttn=""http://fsrar.ru/WEGAIS/ReplyNoAnswerTTN"" xmlns:ns=""http://fsrar.ru/WEGAIS/WB_DOC_SINGLE_01"" xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance""> <ttn:WbRegID>TTN-0407756344</ttn:WbRegID> <ttn:ttnNumber>РН00012138</ttn:ttnNumber> <ttn:ttnDate>2020-09-05</ttn:ttnDate> <ttn:Shipper>030000009719</ttn:Shipper> </ttn:NoAnswer> </ttn:ttnlist> </ns:ReplyNoAnswerTTN> </ns:Document> </ns:Documents>"; 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