去除HTML标签删除HTML示例代码

/// <summary>
/// 去除html标签
/// </summary>
/// <param name="htmlstring"></param>
/// <returns></returns>
public static string deletehtml(string htmlstring)
{
//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 = htmlstring.replace("<", "");
htmlstring = htmlstring.replace(">", "");
htmlstring = htmlstring.replace("\r\n", "");
return htmlstring;
}