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 = @"<span class=\""_c1 ei_card_subtitle _c1\"">.*?([\dX]+).*?<\/span>"; string input = @"<body class=""default-theme des-mat"" style=""background: rgb(255, 255, 255);""><div id=""prpd""></div><div class="" id=""mngb""><div id=""gb"" class=""gb_T""><div class=""gb_nb gb_Lg gb_R gb_Kg gb_Og gb_T"" style=""min-width: 241px;""><div class=""gb_oe gb_R gb_Lg gb_Bg""><div class=""gb_Q gb_R gb_S gb_Lg""><span class=""_c1 ei_card_subtitle _c1"">Name<br /> 713286XXX971 - 12021980</span>/div><div class=""gb_Q gb_R""><a class=""gb_P"" data-pid=""23"" href=""https://mail.google.com/mail/?authuser=0"">Gmail</a></div><div class=""gb_Q gb_R""><a class=""gb_P"" data-pid=""2"" href=""https://www.google.com/imghp?hl=en&amp;authuser=0"">Images</a></div></div><div class=""gb_Ec gb_Lg gb_R"" style=""min-width: 120px;""><div class=""gb_fa"" id=""gbsfw"" style=""background-color:#eee;min-width:376px""><iframe ng-non-bindable="" frameborder=""0"" hspace=""0"" marginheight=""0"" marginwidth=""0"" scrolling=""no"" style=""width: 376px; height: 380px;"" tabindex=""0"" vspace=""0"" width=""100%"" class=""gb_9b"" allowtransparency=""true"" aria-hidden=""true"" id=""I0_1523641321551"" name=""I0_1523641321551"" src=""https://notifications.google.com/u/0/widget?sourceid=243&amp;hl=en&amp;origin=https%3A%2F%2Fwww.google.com&amp;uc=1&amp;usegapi=1&amp;jsh=m%3B%2F_%2Fscs%2Fabc-static%2F_%2Fjs%2Fk%3Dgapi.gapi.en.DgOlXVbWcXc.O%2Fm%3D__features__%2Frt%3Dj%2Fd%3D1%2Frs%3DAHpOoo-riybzrJ8O_UpInxWO1d1OWu1FtA#pid=243&amp;_methods=onError%2ConInfo%2ChideNotificationWidget%2CpostSharedMessage%2Creauth%2CsetNotificationWidgetHeight%2CsetNotificationWidgetSize%2CswitchTo%2CnavigateTo%2CsetNotificationText%2CsetNotificationAnimation%2CgetNotificationText%2CvalidateUser%2C_ready&amp;id=I0_1523641321551&amp;_gfid=I0_1523641321551&amp;parent=https%3A%2F%2Fwww.google.com&amp;pfname=&amp;rpctoken=13573360""></iframe></div><div class=""gb_da gb_9c gb_R"" id=""gbwa""><div class=""gb_Qc""><a class=""gb_b gb_hc"" href=""https://www.google.com/intl/en/options/"" title=""Google apps"" aria-expanded=""false"" role=""button"" tabindex=""0""></a><div class=""gb_wb""></div></body>"; 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