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Question

Parsing a string to determine it's a website URL? (asp.net)

Answer 1

+4 A:

Call Uri.TryCreate.

For example:

Uri parsedUri;
if (!Uri.TryCreate(input, UriKind.Absolute, out parsedUri)) {
    //Bad!
}

SLaks 2010-10-26 12:54:06

Answer 2

A:

Use a regular expression

m.edmondson 2010-10-26 13:03:40

_No_, **don't**.

SLaks 2010-10-26 13:04:33

Any reasons why?

m.edmondson 2010-10-26 13:07:29

Most regular expressions that you'll find will not fully conform to the URL spec. (eg, inline basic auth, `.museam`, full sets of domain name characters)

SLaks 2010-10-26 13:08:24

So why not sit down with the spec and write one that does?

m.edmondson 2010-10-26 13:08:55

Because you'll end up with an enormous and complicated regex (which you'll need to debug) that duplicates functionality already available in `Uri.TryCreate`.

SLaks 2010-10-26 13:09:58

Okay fair comment

m.edmondson 2010-10-26 13:11:18

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Parsing a string to determine it's a website URL? (asp.net)

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