/// <Summary>
/// Remove HTML tags
/// </Summary>
/// <Param name = "NoHTML"> including the source code of HTML </param>
/// <Returns> removed text </returns>
Public static string NoHTML (string Htmlstring)
{
// Delete the script
Htmlstring = Regex. Replace (Htmlstring, @ "<script [^>] *?>. *? </Script> "," ", RegexOptions. IgnoreCase );
// Delete 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 ();
Return Htmlstring;
}