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

/
/
ig

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(?:.*?:("".*?""))|(.*)"; string substitution = @"$1"; string input = @"{""maps"":{""idOthers"":{""label"":""Others"",""state"":1,""bkmrk"":{}}},""portals"":{""id1472374017624"":{""label"":""Teslin, YT"",""state"":1,""bkmrk"":{""id1471384290640"":{""guid"":""1c742997732a404190ad947a1e2ad1f1.12"",""latlng"":""60.176809,-132.790461"",""label"":""Teslin Heritage Centre, Yt - j""},""id1471384292759"":{""guid"":""0ff8105df28b4291bb388bb3169992b0.16"",""latlng"":""60.167183,-132.707912"",""label"":""Moose And Caribou Replica""},""id1471384291685"":{""guid"":""80e38740843f43489e5c3b9bcb4017e6.16"",""latlng"":""60.16109,-132.693209"",""label"":""Village of Teslin Gazebo""},""id1471384293782"":{""guid"":""71e8bd86f50c4fd9844f3d4091b92325.16"",""latlng"":""60.167443,-132.707359"",""label"":""Wildlife Gallery""}}},""id1472374213379"":{""label"":""Watson Lake, YT"",""state"":1,""bkmrk"":{""id1472374223764"":{""guid"":""32b7435123914d6d8c470f1c9c3d03b2.16"",""latlng"":""60.066292,-128.704744"",""label"":""Wye Lake Gazebo""},""id1472374224152"":{""guid"":""52f7f7cbac894342a5e83a97a46c7422.16"",""latlng"":""60.065734,-128.705368"",""label"":""Wye Lake Park""},""id1472374224529"":{""guid"":""04b586b6c30c42ce84bdb7f85d9f2d16.16"",""latlng"":""60.065442,-128.704187"",""label"":""Horned & Common Dandelions""},""id1472374225092"":{""guid"":""f657a17af2dc48c6966aa32a83f2b1f9.16"",""latlng"":""60.062886,-128.7068"",""label"":""First Wye Lake Park""},""id1472374225511"":{""guid"":""33498408d348447d9cde3fdb180dc038.16"",""latlng"":""60.064183,-128.714208"",""label"":""Watson Lake Information Center""},""id1472374225978"":{""guid"":""da5df8fb86d44476b4372ba0295ae2af.12"",""latlng"":""60.063748,-128.715488"",""label"":""Watson Lake Sign Post Forest -""},""id1472374226806"":{""guid"":""33f693fa6735446a8d848300487b46f0.16"",""latlng"":""60.065042,-128.713877"",""label"":""Watson Lake Recreation Centre""},""id1472374227184"":{""guid"":""e968d06b86264aae882b41038e6c19c1.16"",""latlng"":""60.06444,-128.715315"",""label"":""Robert Campbell Highway Information""},""id1472374223273"":{""guid"":""84d9bc723f7c4d7e98a7a62ec86f7a68.16"",""latlng"":""60.062733,-128.704699"",""label"":""Watson Lake Library""}}},""idOthers"":{""label"":""Others"",""state"":1,""bkmrk"":{""id1472374171311"":{""guid"":""445808e24dd840d5b24b407edd8f664b.16"",""latlng"":""60.027705,-129.080566"",""label"":""Native Outlook""},""id1472374176673"":{""guid"":""184a20a3b1694bf68c89354680d7b674.16"",""latlng"":""60.027904,-129.080963"",""label"":""Nugget Totem""}}}}} "; RegexOptions options = RegexOptions.IgnoreCase; Regex regex = new Regex(pattern, options); string result = regex.Replace(input, substitution); } }

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