regex to replace self closing html tags in c#

Question

I have an xml which contains some html tags also. When a tag comes in, it breaks the page because it's a self closing tag. Something like:

<iframe width="420" height="315" src="//www.youtube.com/embed/6krfYKxJFqA" frameborder="0" />

I want to replace this and convert it to:

Can anyone provide a c# code with regex to do this. I tried doing:

tmp = tmp.Replace("(<iframe[^>]*)(\\s*/>)", "$1></iframe>");

and

tmp = new Regex(@"(<iframe[^>]*)(\\s*/>)").Replace(tmp, "$1></iframe>");

tmp is the xml containing lot of code + this iframe tag as string.

but with no result.

In the second regex, you don't need the double backslash as you are using @ — Tzach
– Tzach, Commented Feb 18, 2014 at 6:28
Bravo.. Thanks. That was the problem. Just for knowledge, what difference does @ cause? — Ross Cooper
– Ross Cooper, Commented Feb 18, 2014 at 6:35

Eliran Pe'er · Accepted Answer · 2014-02-18 06:51:36Z

1

Try this as a match expression:

<iframe(.*?)(["\d\w\s])\/>

note that you can use http://regexpal.com/ to test regex, it's super convenient.

answered Feb 18, 2014 at 6:51

Eliran Pe'er

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Comments

Community · Accepted Answer · 2017-05-23 11:33:17Z

0

In the second regex, you don't need the double backslash as you are using @.

Also, (<iframe[^>]*) also matches the last /, use the non-greedy ? operator: (<iframe[^>]*?)(\s*/>)

CommunityBot

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answered Feb 18, 2014 at 6:35

Tzach

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How do I completely remove the iframe tags if I want to?

@RossCooper Use <iframe[^>]*> and replace it with an empty string ""