C#去除字符串中的HTML，效果就像将HTML复制到记事本一样

/// <summary>
/// 去除字符串中的HTML，效果就像将HTML复制到记事本一样
/// </summary>
/// <param name="Htmlstring"></param>
/// <returns></returns>
public static string DelHTML(string Htmlstring)//将HTML去除
{
#region
//删除脚本

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"<script[^>]*?>.*?</script>", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

//删除HTML

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"<(.[^>]*)>", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"([/r/n])[/s]+", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"-->", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"<!--.*", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

//Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"<A>.*</A>","");

//Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"<[a-zA-Z]*=/.[a-zA-Z]*/?[a-zA-Z]+=/d&/w=%[a-zA-Z]*|[A-Z0-9]","");

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"&(quot|#34);", "/"", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"&(amp|#38);", "&", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"&(lt|#60);", "<", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"&(gt|#62);", ">", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"&(nbsp|#160);", " ", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"&(iexcl|#161);", "/xa1", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"&(cent|#162);", "/xa2", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"&(pound|#163);", "/xa3", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"&(copy|#169);", "/xa9", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring, @"&#(/d+);", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring.Replace("<", "");

Htmlstring.Replace(">", "");

Htmlstring.Replace("/r/n", "");

//Htmlstring=HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim();
#endregion

return Htmlstring;

}