using System;

public class Program

{

    public static void Main()

    {

/*

            HtmlAgilityPack.HtmlDocument document = new HtmlAgilityPack.HtmlDocument();

            document.LoadHtml("<span>a&nbsp;</span>");

            string textValue = HtmlAgilityPack.HtmlEntity.DeEntitize(document.DocumentNode.InnerText);

        Console.WriteLine(textValue);

        Console.WriteLine(String.IsNullOrWhiteSpace(textValue));

        dynamic obj=null;

        bool isNull = obj? true : false;

        Console.WriteLine(isNull);

        */

        /*Console.WriteLine(AdjustTextEnd("dss.dsfs. "));*/

        Console.WriteLine(StripTextFromHtml("<span style=\"color:#000000;\">&nbsp;This is&nbsp;a space test&nbsp;</span>"));

        //Console.WriteLine(StripTextFromHtml("This is a space test "));

    }

    public static string AdjustTextEnd(string text)

    {

        if (string.IsNullOrWhiteSpace(text))

            return "";

​

        return $"{text.TrimEnd(new Char[] { '!', '.', ' '})}. |"; 

    }

    public static string StripTextFromHtml(string html)

    {

        if (string.IsNullOrEmpty(html)) return "";

​

        try

        {

         string htmlDecoded = System.Net.WebUtility.HtmlDecode(html);

            Console.WriteLine(htmlDecoded);

            var mainDoc = new HtmlAgilityPack.HtmlDocument();

            mainDoc.LoadHtml(htmlDecoded);

​

            return mainDoc.DocumentNode.InnerText?.Trim();

        }

        catch (Exception)

        {

            return html;

        }

    }

}