CODEWITHSUNDEEP
c#.nethtmlregex
Terminador
Terminador

Reputation: 1398

How to clean HTML from any special tag via Regex in C#?

How to clean HTML fromany special tag via Regex in C#?

Here is a sample HTML where Ineed to delete <font size="-2">

R&amp;usg=AFQjCNFYiDC6u3xOGn4JpO-GF83PjdSbtw&amp;url=http://online.wsj.com/article/SB10000872396390444426404577647060576633348.html"><img src="//nt2.ggpht.com/news/tbn/bm6jvTMtF-PpnM/6.jpg" alt="" border="1" width="80" height="80" /><br /><font size="-2">Wall Street Journal</font></a></font>
            </td>

I know we have to use somehow Regex, but I cannot figure out how we can use it.

I have tried to adjust this method but it cleans ALL tags.

public string Strip(string text) 
{ 
   return Regex.Replace(text, @”<(.|\n)*?>”, string.Empty); 
}

In fact I am looking to some approach to do like this

public string Strip(string text, HTMLTags.Font)
{

}

where HTMLTags.Font is a enum of some of the HTML tags

enum HTMLTags
{
    Font,
    Div,
    Td
    ...
}

Thank you for any clue!!!

Upvotes: 0

Views: 711

Answers (3)

Alex
Alex

Reputation: 35407

While HTMLAgilityPack is, most probably, the best option (as it allows you to perform LINQ queries and/or XPath queries against a DOM like representation of the HTML). A start could be the following:

public static class HTMLTags
{
    public string Font { get { return "<font>" } }
    public string Div { get { return "<div>" } }
    public string Td { get { return "<td>" } }
}

then, in your client code:

public string Strip(string text, HTMLTags.Font)
{
    /* string parse/replace occurances of HTMLTags.Font  */
}

Upvotes: 1

Cybermaxs
Cybermaxs

Reputation: 24556

The best for this should be Html Agility Pack.

It's not a regex but the parser is very tolerant with "real world" malformed HTML.

Upvotes: 2

L.B
L.B

Reputation: 116178

use HtmlAgilityPack to parse html

HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(html);

foreach (var font in doc.DocumentNode.Descendants("font").ToArray())
{
    font.Remove();
}

Upvotes: 3

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