C#, function to replace all html special characters with normal text characters

Question

I have characters incoming from an xml template for example:

&amp; &gt;

Does a generic function exist in the framework to replace these with their normal equivalents?

Andrew Hare · Accepted Answer · 2010-04-27 11:26:37Z

69

You want to use HttpUtility.HtmlDecode.:

Converts a string that has been HTML-encoded for HTTP transmission into a decoded string.

answered Apr 27, 2010 at 11:26

Andrew Hare

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1 Comment

Martin at Mennt Over a year ago

I have a problem with this and scandinavian characters. It does decode ex. %20 to blank space, but %F8 which should be an ø is just shown as some sort of ascii question mark figure. Any tips?

jaybro · Accepted Answer · 2018-10-29 19:54:38Z

10

Sometimes the text has parts that has been doubly encoded.

For example: "Lorem Ipsum&#x0D;
   - Blah"

This may help with that:

public static string RecursiveHtmlDecode(string str) {
    if (string.IsNullOrWhiteSpace(str)) return str;  
    var tmp = HttpUtility.HtmlDecode(str);
    while (tmp != str)
    {
        str = tmp;
        tmp = HttpUtility.HtmlDecode(str);
    }
    return str; //completely decoded string
}

answered Oct 29, 2018 at 19:54

jaybro

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Comments

fatihyildizhan · Accepted Answer · 2023-09-07 17:40:51Z

5

Maybe this helps: WebUtility.HtmlDecode("");

edited Sep 7, 2023 at 17:40

fatihyildizhan

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answered Dec 8, 2014 at 20:33

Rumata

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