using System;

using System.Text;

​

namespace Test

{

    public class HtmlTagRemover

    {

        private StringBuilder m_builder;

​

        public HtmlTagRemover()

        {

            m_builder = new StringBuilder();

        }

​

        public string RemoveTags(string text)

        {

            m_builder.Clear();

​

            bool inTag = false;

            for (int i = 0; i < text.Length; i++)

            {

                char c = text[i];

                switch (c)

                {

                    case '<':

                        inTag = true;

                        break;

                    case '>':

                        inTag = false;

                        break;

                    default:

                        if (!inTag)

                            m_builder.Append(c);

                        break;

                }

            }

​

            return m_builder.ToString();

        }

    }

​

    public class Program

    {

        public void Main(string[] args)

        {

            HtmlTagRemover remover = new HtmlTagRemover();

            string result = remover.RemoveTags("<b><i>The tag is <span>about</span> to be removed</i></b><input type=text />. There is a input here");

            Console.WriteLine(result);

        }

    }

}

​