using System;

using System.Web;

​

public class Program

{

    public static void Main()

    {

        var hexCodeResult = HttpUtility.HtmlDecode("€");

        Console.WriteLine("hexCodeResult = " + hexCodeResult);

        var htmlEntityCodeResult = HttpUtility.HtmlDecode("€");

        Console.WriteLine("htmlEntityCodeResult = " + htmlEntityCodeResult);

    }

}