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
Processing...

Test String

Substitution
Processing...

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(http(?:s)?:\/\/)((?:(?:\w+)\.?)+\/)(vtvnpvr\S{0,10}\/sdash\/)(.*)(CUP|TDT)(\S{1,3})(\/\S{4,100})((\?)|(&)device)=(\S{1,5})_(\S{1,5})_(\S{1,100})"; string substitution = @"$1vfott2cdn.gb.vodafone.es/$3$4CUP$6$7$8=$11_XDSL_$13"; string input = @"http://vfccastcdn.gb.vodafone.es/vtvnpvr2/sdash/LIVE%24TDT001/2.mpd/Manifest?start=2018-11-20T16:55:00Z&end=2018-11-20T19:30:00Z&device=DASH_VTV_ENC_NPVR http://vfccastcdn.gb.vodafone.es/vtvnpvr/shss/LIVE%24CUP156/2.ism/Manifest?start=2018-11-20T16:55:00Z&end=2018-11-20T19:30:00Z&device=HSS_OTT_ENC_NPVR http://vfvtvcdn.gb.vodafone.es/shss/LIVE$CUP156/2.ism/Manifest?start=2018-02-20T16:00:00Z&end=2018-02-20T17:00:00Z&device=HSS_VTV_AVC_ENC_RB_HD "; Regex regex = new Regex(pattern); string result = regex.Replace(input, substitution, 1); } }

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