How to write regular expression for 101/AZ19/500000009/08 problematically in C#?

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Regular expression string : 101/AZ19/500000009/08
1st part : 3 digit no
2nd part : 2 char and 2 number
3rd part : 9 digit no
4th part : 2 digt no
 
Seprator is : /
 
How to write regular expression for above string?

What I have tried:

Regular expression string : 101/AZ19/500000009/08
1st part : 3 digit no
2nd part : 2 char and 2 number
3rd part : 9 digit no
4th part : 2 digt no
 
Seprator is : /
 
How to write regular expression for above string?

Posted 14-Mar-19 1:14am

Sanket4

Updated 14-Mar-19 1:47am

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Thomas Daniels · Answer 1 · 2019-03-14T01:27:00

A digit is \d. A repetition can be implemented using {N} (meaning that a char or group must be repeated N times). With that, your regex becomes:

^\d{3}/[A-Z]{2}\d{2}/\d{9}/\d{2}$

Test it here: Online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript[^]

C#

string regex = @"^\d{3}/[A-Z]{2}\d{2}/\d{9}/\d{2}$";

Note the @ before the string; it makes the string a verbatim string literal so you don't have to escape the backslashes.

Patrice T · Answer 2 · 2019-03-14T01:48:00

Just a few interesting links to help building and debugging RegEx.
Here is a link to RegEx documentation:
perlre - perldoc.perl.org[^]
Here is links to tools to help build RegEx and debug them:
.NET Regex Tester - Regex Storm[^]
Expresso Regular Expression Tool[^]
RegExr: Learn, Build, & Test RegEx[^]
Online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript[^]
This one show you the RegEx as a nice graph which is really helpful to understand what is doing a RegEx: Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.[^]
This site also show the Regex in a nice graph but can't test what match the RegEx: Regexper[^]

How to write regular expression for 101/AZ19/500000009/08 problematically in C#?

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