using System;

using System.Web;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(DoStuff("<li class=\"something\">I am some text < </li>"));

        Console.WriteLine(DoStuff("<li class=\"something\">I am some text < </li>"));

        Console.WriteLine(DoStuff("<p><strong><em><u>test</u></em></strong> pdd</p>"));

        Console.WriteLine(DoStuff("<p>test <strong><em><u>pdd</u></em></strong></p><br /><p>test <strong><em><u>pdd</u></em></strong></p>"));

        Console.WriteLine(HttpUtility.HtmlDecode(DoStuff("<p>test pdd <strong><u>&lt;</u></strong></p><br><p>test pdd <em><u>&gt;</u></em></p>")));

    }

    public static string DoStuff(string text) {

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

        doc.LoadHtml(text);

​

        string output = "";

        foreach (var node in doc.DocumentNode.ChildNodes)

        {

            output += node.InnerText;

        }

        return output;

    }

}