Question

How determine if a string has been encoded programmatically in C#?

Lets for example string:

<p>test</p>

I would like have my logic understand that this value it has been encoded..
Any ideas? Thanks

Answer 1

You can use HttpUtility.HtmlDecode() to decode the string, then compare the result with the original string. If they’re different, the original string was probably encoded (at least, the routine found something to decode inside):

public bool IsHtmlEncoded(string text)
{
    return (HttpUtility.HtmlDecode(text) != text);
}