. Net filters special characters and. net special characters

. Net filters special characters and. net special characters

/// <Summary>
/// Filter tags
/// </Summary>
/// <Param name = "NoHTML"> source code that includes HTML, script, database keyword, and special characters </param>
/// <Returns> the marked text has been removed </returns>
Public string NoHTML (string Htmlstring)
{
If (Htmlstring = null)
{
Return "";
}
Else
{
// 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 = Regex. Replace (Htmlstring, "xp_mongoshell", "", RegexOptions. IgnoreCase );

// Delete database-Related Words
Htmlstring = Regex. Replace (Htmlstring, "select", "", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "insert", "", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "delete from", "", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "count'' "," ", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "drop table", "", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "truncate", "", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "asc", "", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "mid", "", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "char", "", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "xp_mongoshell", "", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "exec master", "", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "net localgroup administrators", "", RegexOptions. IgnoreCase );
Htmlstring = Regex. Replace (Htmlstring, "and", "", RegexOptions. IgnoreCase );

Return Htmlstring;

}

}