利用正则表达式去掉html代码

using System.Text.RegularExpressions;//需要引用

// 利用正则表达式去掉"<"和">"之间的内容
private string StripHT(string strHtml)
{
Regex regex=new Regex("<. ?>",RegexOptions.IgnoreCase);
string strOutput=regex.Replace(strHtml,"");
return strOutput;
}

//方法二(不知为什么此方法占用CPU100%)

public static string DropHTML(string strHtml)
{
string [] aryReg ={
@"<script[^>]*?>.*?</script>",
@"<(\/\s*)?!?((\w :)?\w )(\w (\s*=?\s*(([""''])(\\[""''tbnr]|[^\7])*?\7|\w )|.{0})|\s)*?(\/\s*)?>",
@"([\r])[\s] ",
@"&(quot|#34);",
@"&(amp|#38);",
@"&(lt|#60);",
@"&(gt|#62);",
@"&(nbsp|#160);",
@"&(iexcl|#161);",
@"&(cent|#162);",
@"&(pound|#163);",
@"&(copy|#169);",
@"&#(\d );",
@"-->",
@"<!--.*"
};

string [] aryRep = {
"",
"",
"",
"\"",
"&",
"<",
">",
" ",
"\xa1",//chr(161),
"\xa2",//chr(162),
"\xa3",//chr(163),
"\xa9",//chr(169),
"",
"\r",
""
};

string newReg =aryReg[0];
string strOutput=strHtml;
for(int i = 0;i<aryReg.Length;i )
{
Regex regex = new Regex(aryReg[i],RegexOptions.IgnoreCase );
strOutput = regex.Replace(strOutput,aryRep[i]);
}

strOutput.Replace("<","");
strOutput.Replace(">","");
strOutput.Replace("\r","");
return strOutput;

}
http://www.cnblogs.com/wang123/archive/2006/09/16/505758.html