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

/
/
gm

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"^.*(?P<message>{.*})"; string input = @"{""channel"":""crm_process_booking_log"",""log_type"":""DEBUG"",""index_name"":""crm_process_booking_log"",""index_type"":""crm_process_booking_log"",""error_type"":0,""message"":{""data"":{""STEP"":""Adding Post Data"",""post_data"":{""customer"":[{""relation"":""others"",""age"":28,""dob"":null,""gender"":""F"",""email"":null,""customer_id"":""66aff7d8-cd9b-4796-bf17-e66088c3565a"",""customer_name"":""Prena"",""contact_number"":null}],""slot"":{""slot_id"":""684178718""},""gender"":""M"",""mobile"":""6700670875"",""email"":""siddhant.khanna_testi_blr+rahul@acko.tech"",""state"":""26"",""cityId"":""23"",""latitude"":28.5101825,""longitude"":77.0682661,""address"":""sector 21, gurgaon, Gurgaon, Haryana, 122016"",""zipcode"":""122016"",""landmark"":""home"",""altmobile"":false,""altemail"":false,""package"":[{""deal_id"":[""package_216""]}],""customer_calling_number"":""6700670875"",""billing_cust_name"":""Rahu"",""sub_locality"":""sector 21, gurgaon, Gurgaon, Haryana, 122016"",""hard_copy"":0,""vendor_booking_id"":false,""vendor_billing_user_id"":""4rWzYn5NOhEgNPdiVGWiRA"",""payment_option"":""invoice"",""discounted_price"":0,""sample_collected"":""n"",""role_id"":0,""search_by"":""customer_mobile"",""channel_partner"":""3"",""channel_partner_user"":""5490"",""booked_source"":""api"",""zip_search"":2,""calling_from"":""external_api"",""b2bNewExistingUser"":false,""user_id_ajax"":"",""whatsappconcent"":1,""billing_zone_id"":""53"",""zone_id"":""53"",""amzn_trace_id"":""Root=1-65c33f1c-29fe535658001b076140677c"",""billing_cust_city"":""gurgaon"",""billing_cust_city_id"":""23"",""locality"":""541"",""channel_type"":""3"",""channel_user"":""5490""},""amzn_trace_id"":""Root=1-65c33f1c-29fe535658001b076140677c""},""calling_trace"":{""file"":""\/var\/www\/newcrm-t25\/application\/controllers\/crmuser\/crmorder.php"",""line"":1227,""function"":""addProcessBookingLog"",""class"":""Enterprise_logger""}},""amzn_trace_id"":""Root=1-65c33f1c-29fe535658001b076140677c"",""nginx_request_id"":""c93176430784c9dd4e32e35541e6e31a"",""timestamp"":""2024-02-07 13:58:12""}"; 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