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

/
/
gms

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @",\s*(""subresource_uris"":.[^}]*[}])"; string input = @"{ ""first_page_uri"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?PageSize=1000&Page=0"", ""end"": 387, ""previous_page_uri"": null, ""uri"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?PageSize=1000&Page=0"", ""page_size"": 1000, ""start"": 0, ""usage_records"": [ { ""category"": ""wireless-usage"", ""description"": ""SIM Usage"", ""account_sid"": ""ACd7a7c24a3c7b0b0ddcde452fd6c18aae"", ""start_date"": ""2023-01-01"", ""end_date"": ""2023-01-31"", ""as_of"": ""2023-02-05T06:53:40+00:00"", ""count"": ""0"", ""count_unit"": ""units"", ""usage"": ""0"", ""usage_unit"": ""units"", ""price"": ""0"", ""price_unit"": ""usd"", ""api_version"": ""2010-04-01"", ""uri"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?Category=wireless-usage&StartDate=2023-01-01&EndDate=2023-01-31"", ""subresource_uris"": { ""all_time"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/AllTime.json?Category=wireless-usage"", ""today"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Today.json?Category=wireless-usage"", ""yesterday"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Yesterday.json?Category=wireless-usage"", ""this_month"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/ThisMonth.json?Category=wireless-usage"", ""last_month"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?Category=wireless-usage"", ""daily"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Daily.json?Category=wireless-usage"", ""monthly"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Monthly.json?Category=wireless-usage"", ""yearly"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Yearly.json?Category=wireless-usage"" } }, { ""category"": ""pv-basic-rooms"", ""description"": ""Go Rooms"", ""account_sid"": ""ACd7a7c24a3c7b0b0ddcde452fd6c18aae"", ""start_date"": ""2023-01-01"", ""end_date"": ""2023-01-31"", ""as_of"": ""2023-02-05T06:53:40+00:00"", ""count"": ""0"", ""count_unit"": "", ""usage"": ""0"", ""usage_unit"": "", ""price"": ""0"", ""price_unit"": ""usd"", ""api_version"": ""2010-04-01"", ""uri"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?Category=pv-basic-rooms&StartDate=2023-01-01&EndDate=2023-01-31"", ""subresource_uris"": { ""all_time"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/AllTime.json?Category=pv-basic-rooms"", ""today"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Today.json?Category=pv-basic-rooms"", ""yesterday"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Yesterday.json?Category=pv-basic-rooms"", ""this_month"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/ThisMonth.json?Category=pv-basic-rooms"", ""last_month"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/LastMonth.json?Category=pv-basic-rooms"", ""daily"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Daily.json?Category=pv-basic-rooms"", ""monthly"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Monthly.json?Category=pv-basic-rooms"", ""yearly"": ""/2010-04-01/Accounts/ACd7a7c24a3c7b0b0ddcde452fd6c18aae/Usage/Records/Yearly.json?Category=pv-basic-rooms"" } }, "; RegexOptions options = RegexOptions.Multiline | RegexOptions.Singleline; 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