URL Regular Expression Update

Question

I am using the following expression for URL validation.

^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$

However, when I have

"httpcolonforwardslashessite" (colon = : and foward slashes = //)

it still passes it as a url. how can I modify the above expression to make sure that there is ".com/net" at the end?

Thank you

tldr: I want to check for .com or .net at the end of url. What changes can I make to above exp to achieve this?

You might want to look at http://stackoverflow.com/questions/833469/regular-expression-for-url — Carlos Blanco, Jun 19 '13 at 15:31
thanks...but that got a bit more complicated than I was hoping for...very complex regex. What can I do to add a "clause" at the end that check for .com or .net at the end? I want url with http://google to be rejected — 007, Jun 19 '13 at 15:35

Bhushan Firake · Answer 1 · 2013-06-20T14:32:29.347

4

Can't you use inbuilt function, instead of Regex?

Uri.TryCreate Method can help you.

This method

returns a Boolean value that is true if the Uri was successfully created; otherwise, false.
can check different kinds of urls like Absolute or/and Relative using an overload that accepts UriKind Enumeration as a parameter.

edited Jun 20 '13 at 14:32

answered Jun 19 '13 at 15:34

Bhushan Firake

Seriously, I learn something new every day on this site, without even asking anything :D – Nolonar Jun 19 '13 at 15:37
@Nolonar Everyone learns here...from a newbie to over-experienced. – Bhushan Firake Jun 19 '13 at 15:39
Already tried that...fails for some criteria where this exp passes. :( – 007 Jun 19 '13 at 15:39
@user1569220 What criteria? Let ne know? I am using this for a long time and it worked perfectly. – Bhushan Firake Jun 19 '13 at 15:40
@user1569220 I'm curious as well, can you give us a URL that won't work with this? – Nolonar Jun 19 '13 at 15:41
h t t P : / / www . g o o g l e (all together) – 007 Jun 19 '13 at 15:45
@user1569220 So you mean `http://www.google` will work, but shouldn't? Or it won't work, but should? – Nolonar Jun 19 '13 at 16:07
it shouldn't pass (according to what I am trying to do)...but it does. – 007 Jun 21 '13 at 15:17

score 1 · Answer 2 · edited Sep 09 '13 at 03:48

1

Assuming you only want .com, this will work:

^(https?://)?([\da-z.-]+).([a-z.]{2,6})([/\w .-])/?\.com([/\w \.!"£$%^&\(\)\*])*

or this one to include not just .com from here

^(http|https)\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&amp;%\$#\=~])*$

edited Sep 09 '13 at 03:48

Bhushan Firake

answered Jun 19 '13 at 15:37

Tom Beech

2 Answers2