HTML：正则表达式可匹配多个示例

Question

I have an HTML text, where I want to find images and videos. Found some examples, but can't make it work.

I have working example for only images:

MatchCollection urls = Regex.Matches(this.item.text, "<img.+?src=[\\\"'](.+?)[\\\"'].*?> );

For both i want to make something like this:

MatchCollection urls = Regex.Matches(this.item.text, "<img.+?src=[\\\"'](.+?)[\\\"'].*?> | <iframe .*?/> | <iframe .*?</iframe>");

The last regex found 0 images, where first got 3.

Answer 1

Try the following:

(<img.+?src=[\\\"'](.+?)[\\\"'].*?>)|((<iframe.*?\/>)|(<iframe.*?<\/iframe>))

You were missing the parenthesis.