如何解决删除字符串中的 HTML 标签?

This does not work for all cases and should not be used to process untrusted user input.

using System.Text.RegularExpressions;
...
const string HTML_TAG_PATTERN = "<.*?>";

static string StripHTML (string inputString)
{
   return Regex.Replace 
     (inputString, HTML_TAG_PATTERN, string.Empty);
}

解决方法

如何从以下字符串中删除 HTML 标签?

<P style="MARGIN: 0cm 0cm 10pt" class=MsoNormal><SPAN style="LINE-HEIGHT: 115%; 
FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #333333; FONT-SIZE: 9pt">In an 
email sent just three days before the Deepwater Horizon exploded,the onshore 
<SPAN style="mso-bidi-font-weight: bold"><b>BP</b></SPAN> manager in charge of 
the drilling rig warned his supervisor that last-minute procedural changes were 
creating "chaos". April emails were given to government investigators by <SPAN 
style="mso-bidi-font-weight: bold"><b>BP</b></SPAN> and reviewed by The Wall 
Street Journal and are the most direct evidence yet that workers on the rig 
were unhappy with the numerous changes,and had voiced their concerns to <SPAN 
style="mso-bidi-font-weight: bold"><b>BP</b></SPAN>’s operations managers in 
Houston. This raises further questions about whether <SPAN 
style="mso-bidi-font-weight: bold"><b>BP</b></SPAN> managers properly 
considered the consequences of changes they ordered on the rig,an issue 
investigators say contributed to the disaster.</SPAN></p><br/>  

我正在将其写入 Asponse.PDF,但 HTML 标记显示在 PDF 中。我怎样才能删除它们?