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Remove HTML tags from string including   in C#


        public static string RemoveHTML(string html)
        {
            try
            {
                StringCollection sc = new StringCollection();
                // get rid of unnecessary tag spans (comments and title)
                sc.Add(@"<!--(\w|\W)+?-->");
                sc.Add(@"<title>(\w|\W)+?</title>");
                // Get rid of classes and styles
                sc.Add(@"\s?class=\w+");
                sc.Add(@"\s+style='[^']+'");
                // Get rid of unnecessary tags
                sc.Add(
                @"<(meta|link|/?o:|/?style|/?div|/?st\d|/?head|/?html|body|/?body|/?span|!\[)[^>]*?>");
                // Get rid of empty paragraph tags
                sc.Add(@"(<[^>]+>)+&nbsp;(</\w+>)+");
                // remove bizarre v: element attached to <img> tag
                sc.Add(@"\s+v:\w+=""[^""]+""");
                // remove extra lines
                sc.Add(@"(\n\r){2,}");
                sc.Add("&nbsp;");
                foreach (string s in sc)
                {
                    html = Regex.Replace(html, s, string.Empty, RegexOptions.IgnoreCase);
                }
                html = System.Text.RegularExpressions.Regex.Replace(html, "<.*?>", String.Empty);
                html = html.Replace("\r", " ").Replace("\n", " ").Replace("  ", " ").Trim();
                html = html.Replace("&rsquo;", "'");
                html = html.Replace("&rdquo;", "\"");

                html = html.Replace("&lsquo;", "'");
                html = html.Replace("&ldquo;", "\"");

                html = html.Replace("&lt;", "<");
                html = html.Replace("&gt;", ">");
                html = html.Replace("&amp;", "&");
            }
            catch { }

            return html;
        }
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