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I have written regex to validate URL which could be either like
example.com
www.example.com
http://www.example.com
https://www.example.com
All 4 are working
Now, if I am entering in a text like (www.example.com--thisisincorrect), it is allowing me to enter and save into db
The regex that I have used is:
http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)? and
([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)? Please help!
437
URL regular expressions can be used to verify if a string has a valid URL format as well as to extract an URL from a string. Discover UI Bakery – an intuitive visual internal tools builder.
@:%_\+~#= , to match the domain/sub domain name. In this solution query string parameters are also taken care. If you are not using RegEx , then from the expression replace \\ by \ . Hope this helps.
When you create a URL input with the proper type value, url , you get automatic validation that the entered text is at least in the correct form to potentially be a legitimate URL. This can help avoid cases in which the user mis-types their web site's address, or provides an invalid one.
[] denotes a character class. () denotes a capturing group. [a-z0-9] -- One character that is in the range of a-z OR 0-9.
You don't need a regex for URLs, use System.Uri class for this. E.g. by using Uri.IsWellFormedUriString method for this:
bool isUri = Uri.IsWellFormedUriString(url, UriKind.RelativeOrAbsolute); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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