如何将HTML转换为纯文本？

Question

我想使用C＃将html转换为纯文本到目前为止我已实现此代码： - ＆gt;

    public static string HTMLToText(string HTMLCode)
    {
        if (HTMLCode == null)
            return null;
        // Remove new lines since they are not visible in HTML
        HTMLCode = HTMLCode.Replace("\n", " ");

        // Remove tab spaces
        HTMLCode = HTMLCode.Replace("\t", " ");

        // Remove multiple white spaces from HTML
        HTMLCode = System.Text.RegularExpressions.Regex.Replace(HTMLCode, "\\s+", " ");

        // Remove HEAD tag
        HTMLCode = System.Text.RegularExpressions.Regex.Replace(HTMLCode, "<head.*?</head>", ""
            , System.Text.RegularExpressions.RegexOptions.IgnoreCase | System.Text.RegularExpressions.RegexOptions.Singleline);

        // Remove any JavaScript
        HTMLCode = System.Text.RegularExpressions.Regex.Replace(HTMLCode, "<script.*?</script>", ""
            , System.Text.RegularExpressions.RegexOptions.IgnoreCase | System.Text.RegularExpressions.RegexOptions.Singleline);

        // Replace special characters like &, <, >, " etc.
        StringBuilder sbHTML = new StringBuilder(HTMLCode);
        // Note: There are many more special characters, these are just
        // most common. You can add new characters in this arrays if needed
        string[] OldWords = { "&nbsp;", "&amp;", "&quot;", "&lt;", "&gt;", "&reg;", "&copy;", "&bull;", "&trade;" };
        string[] NewWords = { " ", "&", "\"", "<", ">", "®", "©", "•", "™" };
        for (int i = 0; i < OldWords.Length; i++)
        {
            sbHTML.Replace(OldWords[i], NewWords[i]);
        }

        // Check if there are line breaks (<br>) or paragraph (<p>)
        sbHTML.Replace("<br>", "\n");
        sbHTML.Replace("<br ", "\n ");
        sbHTML.Replace("<p> ", "\n ");
        sbHTML.Replace("<p ", "\n ");
        sbHTML.Replace("<span ", "\n ");
        sbHTML.Replace("style", " ");
        sbHTML.Replace("FONT", " ");
        sbHTML.Replace("FONT-SIZE", " ");
        sbHTML.Replace("</span> ", "\n");

        // Finally, remove all HTML tags and return plain text
        //Regex reg = new Regex("<[^>]+>", RegexOptions.IgnoreCase); 

        return System.Text.RegularExpressions.Regex.Replace(sbHTML.ToString(), @"</?[a-z][a-z0-9][^<>]>", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

    }

但它不会删除所有标签以及<p>.....<p>...</p>..</p>之类的递归标签 所以外部<p>被移除但内部标记仍然是他们的......

他们是否可以获得纯文本？