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

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"https?:\/\/\S*"""; string input = @"{""created_at"": ""Fri Aug 12 10:04:00 +0000 2016"", ""id"": 764039724818272256, ""text"": ""@theblaze https://t.co/TY9DlZ584c @realDonaldTrump "", ""in_reply_to_screen_name"": ""theblaze"", ""user"": {""id"": 366636488, ""id_str"": ""366636488"", ""name"": ""GIL DUPUY"", ""screen_name"": ""DUPUY77"", ""location"": ""Miami"", ""url"": ""http://ggm-dupuy.com"", ""description"": ""Fashion photographer, love action and adventure, care for the less fortunate, don't tolerate any kind of racism regardless of race or religion"", ""verified"": false, ""followers_count"": 186, ""friends_count"": 446, ""utc_offset"": null, ""time_zone"": null, ""lang"": ""en"", ""default_profile_image"": false, ""following"": null, ""notifications"": null}, ""geo"": null, ""coordinates"": null, ""place"": {""name"": ""Frontenac"", ""full_name"": ""Frontenac, MO"", ""country_code"": ""US"", ""country"": ""United States"", ""attributes"": {}}, ""retweet_count"": 0, ""favorite_count"": 0, ""extended_entities"": {""media"": [{""id"": 764039718237409281, ""id_str"": ""764039718237409281"", ""indices"": [27, 50], ""media_url"": ""http://pbs.twimg.com/media/CppqE1_UkAE2qFj.jpg"", ""media_url_https"": ""https://pbs.twimg.com/media/CppqE1_UkAE2qFj.jpg"", ""url"": ""https://t.co/TY9DlZ584c"", ""display_url"": ""pic.twitter.com/TY9DlZ584c"", ""expanded_url"": ""http://twitter.com/DUPUY77/status/764039724818272256/photo/1"", ""type"": ""photo"", ""sizes"": {""medium"": {""w"": 640, ""h"": 1136, ""resize"": ""fit""}, ""large"": {""w"": 640, ""h"": 1136, ""resize"": ""fit""}, ""thumb"": {""w"": 150, ""h"": 150, ""resize"": ""crop""}, ""small"": {""w"": 383, ""h"": 680, ""resize"": ""fit""}}}]}, ""favorited"": false, ""retweeted"": false, ""possibly_sensitive"": false, ""lang"": ""und""}"; 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