HTML Encoding:

HTML encoding replaces special characters with their corresponding HTML entities. For instance, the less-than sign < becomes <, and the greater-than sign > becomes >. This is important to prevent browsers from interpreting these characters as part of the HTML markup.

Decoding HTML Encoded Strings in C#:

To convert HTML-encoded strings back to their normal form in C#, you can leverage the System.Net.WebUtility class, specifically the HtmlDecode method. This method is designed to handle HTML-encoded strings and reverse the encoding process.

using System;

class Program
{
    static void Main()
    {
        string encodedString = "Hello <world>!";
        string decodedString = System.Net.WebUtility.HtmlDecode(encodedString);

        Console.WriteLine("Encoded String: " + encodedString);
        Console.WriteLine("Decoded String: " + decodedString);
    }
}

• We declare a string encodedString containing an HTML-encoded message.
• We use System.Net.WebUtility.HtmlDecode to decode the HTML-encoded string, storing the result in decodedString.
• Finally, we print both the original encoded string and the decoded string.

Output:

Encoded String: Hello <world>!
Decoded String: Hello <world>!

The output illustrates the conversion of the HTML-encoded string back to its normal form.