using System;

using System.Text.RegularExpressions;

​

/// <summary>

/// Methods to remove HTML from strings.

/// </summary>

public static class HtmlRemoval

{

    /// <summary>

    /// Remove HTML from string with Regex.

    /// </summary>

    public static string StripTagsRegex(string source)

    {

    return Regex.Replace(source, "<.*?>", string.Empty);

    }

​

    /// <summary>

    /// Compiled regular expression for performance.

    /// </summary>

    static Regex _htmlRegex = new Regex("<.*?>", RegexOptions.Compiled);

​

    /// <summary>

    /// Remove HTML from string with compiled Regex.

    /// </summary>

    public static string StripTagsRegexCompiled(string source)

    {

    return _htmlRegex.Replace(source, string.Empty);

    }

​

    /// <summary>

    /// Remove HTML tags from string using char array.

    /// </summary>

    public static string StripTagsCharArray(string source)

    {

    char[] array = new char[source.Length];

    int arrayIndex = 0;

    bool inside = false;

​

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

    {

        char let = source[i];

        if (let == '<')

        {

        inside = true;

        continue;

        }

        if (let == '>')

        {

        inside = false;

        continue;

        }

        if (!inside)

        {

        array[arrayIndex] = let;

        arrayIndex++;

        }

    }

    return new string(array, 0, arrayIndex);

    }

}

public class Program

{

    public static void Main()

    {

        string ss = "<b><i>The tag is about to be removed</i></b>";

        string result = HtmlRemoval.StripTagsCharArray(ss);

        Console.WriteLine(result);

    }

}