Need Regex for asp.net website

Question

2.00/5 (3 votes)

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Need Regular Expression for url validation

Rules:

1. It should validate even if (http or https) is included or not.
2. it not contain other protocols like ftp, mailto
3. It should not contain sub domain URL's and "/" after .com
4. www is must included in url

Posted 14-Feb-14 19:52pm

DeathVally

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Comments

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 15-Feb-14 2:01am

So, what have you tried?

DeathVally 15-Feb-14 2:08am

(?<http>(http:[/][/]|www.)([a-z]|[A-Z]|[0-9])(.[a-z]|[A-Z]{2,3}$)*)

Thank u for response.

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 15-Feb-14 2:18am

What is the problem with this?

DeathVally 15-Feb-14 2:25am

not work properly and i don't know anything about regex.

3 solutions

Solution 1

Try this

http://madskristensen.net/post/validate-a-url-using-regular-expressions[^]

Posted 14-Feb-14 20:26pm

JoCodes

Comments

Sampath Lokuge 15-Feb-14 2:35am

+5 Nice one mate :)

DeathVally 15-Feb-14 2:37am

allowed sub domains and http or https is must .... this both case is reverse regarding to my requirement. please read rules of question again.

Thank u for your Response.

Solution 2

Please check below links also.

perfect URL validation regex

Regular expression for Validating URL with or without http

Posted 14-Feb-14 20:34pm

Sampath Lokuge

Comments

JoCodes 15-Feb-14 2:41am

5!

Sampath Lokuge 15-Feb-14 2:47am

Thanks JoCodes :)

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Peter Leow · Accepted Answer · 2014-02-14T20:37:00

Solution 3

Try this:

^(http[s]?://)?[w]{3}[.]([a-z0-9]+[.])+[a-z]{1,3}$

Convert the url into small case first before applying this regex pattern.

Posted 14-Feb-14 20:37pm

Peter Leow

Updated 14-Feb-14 21:23pm

v2

Comments

DeathVally 15-Feb-14 2:44am

this is 90% done ... but just 1 problem and that is http or https is optional in input.
read 1st rule of question.

Thank u for help.

Peter Leow 15-Feb-14 3:23am

Amended to take care of optional http or https

DeathVally 16-Feb-14 4:47am

Working ... Thank u 4 Help.

DeathVally 17-Feb-14 0:01am

what can i do with .co.uk or .firm.in ... please modify this regex for www.example.firm.in | www.example.co.uk .... after example dot it contain {2,4}+dot+{2} letter

Peter Leow 17-Feb-14 0:26am

You should post it as a new question.

DeathVally 17-Feb-14 1:25am

http://www.codeproject.com/Questions/728572/Need-Regex-for-Url-Validation-for-net

DeathVally 20-Feb-14 1:05am

http://www.codeproject.com/Answers/728589/Need-Regex-for-Url-Validation-for-net-2

Check this link Please