How to Find Quotes within a Tag?

问题

I have a string like this:

This is a very "nice" day!

What should my RegEx-pattern in VB look like, to find the quotes within the tag? I want to replace it with something...

This is a very "nice" day!

Something like <(")[^>]+> doesn't work :(

Thanks

回答1:

It depends on your regex flavor, but this works for most of them:

"(?=[^<]*>)

EDIT: For anyone curious how this works. This translates into English as "Find a quote that is followed by a > before the next <".

回答2:

Regexes are fundamentally bad at parsing HTML (see Can you provide some examples of why it is hard to parse XML and HTML with a regex? for why). What you need is an HTML parser. See Can you provide an example of parsing HTML with your favorite parser? for examples using a variety of parsers.

If you are using VB.net you should be able to use HTMLAgilityPack.

回答3:

Try this: 

回答4:

This should get your the first attribute value in a tag:

<[^">]+"(?<value>[^"]*)"[^>]*>

回答5:

If your intention is to replace ALL quotation marks within tags, you could use the following regular expression:

(<[^>"]*)(")([^>]*>)

That will isolate the substrings before and after your quotation mark. Note that this does not attempt to match opening and closing quotation marks. It simply matches a quotation mark within a tag.

来源：https://stackoverflow.com/questions/857623/how-to-find-quotes-within-a-tag

标签

regex

vb.net

string