使用C#将HTML文本转换为普通文本，去掉所有的Html标记

using System; using System.Collections.Generic; using System.Linq;

using System.Text;

//首先需要导入命名空间 using System.Text.RegularExpressions; namespace WindowsFormsApplication1 {    public class Class1     {        /// <summary>        /// 将html文本转化为 文本内容方法NoHTML        /// </summary>        /// <param name="Htmlstring">HTML文本值</param>        /// <returns></returns>         public string NoHTML(string Htmlstring)         {             //删除脚本                Htmlstring = Regex.Replace(Htmlstring, @"<script[^>]*?>.*?</script>", "", RegexOptions.IgnoreCase);             //删除HTML                Htmlstring = Regex.Replace(Htmlstring, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"([/r/n])[/s]+", "", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"-->", "", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"<!--.*", "", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"&(quot|#34);", "/", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"&(amp|#38);", "&", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"&(lt|#60);", "<", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"&(gt|#62);", ">", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"&(nbsp|#160);", "   ", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"&(iexcl|#161);", "/xa1", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"&(cent|#162);", "/xa2", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"&(pound|#163);", "/xa3", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"&(copy|#169);", "/xa9", RegexOptions.IgnoreCase);             Htmlstring = Regex.Replace(Htmlstring, @"&#(/d+);", "", RegexOptions.IgnoreCase);             //替换掉 < 和 > 标记             Htmlstring.Replace("<", "");             Htmlstring.Replace(">", "");             Htmlstring.Replace("/r/n", "");             //返回去掉html标记的字符串             return Htmlstring;         }     } }