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ASP.NET过滤HTML标签只保留换行与空格的方法

2024-04-05 19:11:04 409

本文实例讲述了ASP.NET过滤HTML标签只保留换行与空格的方法。分享给大家供大家参考。具体分析如下：

自己从网上找了一个过滤HTML标签的方法，我也不知道谁的才是原创的，反正很多都一样。我把那方法复制下来，代码如下：

///  <summary>

///  去除HTML标记

///  </summary>

///  <paramname="NoHTML">包括HTML的源码  </param>

///  <returns>已经去除后的文字</returns>

publicstaticstringNoHTML(stringHtmlstring)

{

 //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);

Htmlstring.Replace("<",""); Htmlstring.Replace(">",""); Htmlstring.Replace("\r\n",""); Htmlstring=HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim(); returnHtmlstring; }

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ASP.NET过滤HTML标签只保留换行与空格的方法

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