Asp. NET filters all HTML tags in several ways

ASP tutorial. NET filters all HTML tags in several ways

public static string nohtml (String htmlstring)
{
Delete Script
htmlstring = Regex.Replace (htmlstring, @ "<script[^>]*?>.*?</script>", "",
Regexoptions.ignorecase);
Delete HTML
htmlstring = Regex.Replace (htmlstring, @) < (. [ ^>]*) > "," ",
Regexoptions.ignorecase);
htmlstring = Regex.Replace (htmlstring, @ "([RN]) [s]+", "",
10:regexoptions.ignorecase);
11:htmlstring = Regex.Replace (htmlstring, @ "-->", "", regexoptions.ignorecase);
12:htmlstring = Regex.Replace (htmlstring, @ "<!--. *", "", regexoptions.ignorecase);
13:htmlstring = Regex.Replace (htmlstring, @ "& (quot| #34);", "" ",
1 regexoptions.ignorecase);
1 htmlstring = Regex.Replace (htmlstring, @ "& (amp| #38);", "&",
16:regexoptions.ignorecase);
17:htmlstring = Regex.Replace (htmlstring, @ "& (lt| #60);", "<",
18:regexoptions.ignorecase);
19:htmlstring = Regex.Replace (htmlstring, @ "& (gt| #62);", ">",
20:regexoptions.ignorecase);
21:htmlstring = Regex.Replace (htmlstring, @ "& (nbsp| #160);", "",
22:regexoptions.ignorecase);
23:htmlstring = Regex.Replace (htmlstring, @ "& (iexcl| #161);", "Xa1",
2 regexoptions.ignorecase);
2 htmlstring = Regex.Replace (htmlstring, @ "& (cent| #162);", "Xa2",
26:regexoptions.ignorecase);
27:htmlstring = Regex.Replace (htmlstring, @ "& (pound| #163);", "Xa3",
28:regexoptions.ignorecase);
29:htmlstring = Regex.Replace (htmlstring, @ "& (copy| #169);", "xa9",
30:regexoptions.ignorecase);
31:htmlstring = Regex.Replace (htmlstring, @ "&# (d+);", "",
32:regexoptions.ignorecase);
33:
3 Htmlstring.replace ("<", "");
3 Htmlstring.replace (">", "");
36:htmlstring.replace ("RN", "");
37:htmlstring = Httpcontext.current.server.htmlencode (htmlstring). Trim ();
38:
39:return htmlstring;
40:}

Method Two

public static string nohtml (String htmlstring)
{
Delete Script
htmlstring = Regex.Replace (htmlstring, @ "<script[^>]*?>.*?</script>", "", regexoptions.ignorecase);
Delete HTML
htmlstring = Regex.Replace (htmlstring, @) < (. [ ^>]*) > "," ", regexoptions.ignorecase);
htmlstring = Regex.Replace (htmlstring, @ "([RN]) [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 ("RN", "");
htmlstring = Httpcontext.current.server.htmlencode (htmlstring). Trim ();

return htmlstring;
}

Method Three

<summary>
Filter HTML Tags
</summary>
<param name= "HTML" ></param>
<returns></returns>
public static string Removehtmltags (string html)
{
HTML = regex.replace (HTML, "<script[^>]*?>.*?</script>", "", regexoptions.ignorecase);
HTML = regex.replace (HTML, "<[^>]*>", "", regexoptions.ignorecase);
return HTML;
}

Method Four

str = system.text.regularexpressions.regex.replace (str, "<[^>]*?>", "");
string result = Regex.Replace (html,@ "< * * *w+[^>]*>", "");

%>