去除HTML标签的文本清洗方法

/// <summary>  
        /// 清除文本中Html的标签  
        /// </summary>  
        /// <param name="Content"></param>  
        /// <returns></returns>  
        protected string ClearHtml(string Content)  
        {  
            Content = Zxj_ReplaceHtml("&#[^>]*;", "", Content);  
            Content = Zxj_ReplaceHtml("</?marquee[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?object[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?param[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?embed[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?table[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml(" ", "", Content);  
            Content = Zxj_ReplaceHtml("</?tr[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?th[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?p[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?a[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?img[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?tbody[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?li[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?span[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?div[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?th[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?td[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("</?script[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("(javascript|jscript|vbscript|vbs):", "", Content);  
            Content = Zxj_ReplaceHtml("on(mouse|exit|error|click|key)", "", Content);  
            Content = Zxj_ReplaceHtml("<\\?xml[^>]*>", "", Content);  
            Content = Zxj_ReplaceHtml("<\\/?[a-z]+:[^>]*>", "", Content);