Как отфильтровать HTML, JS, CSS -код

以下为引用的内容 ：

#region /// 过滤 html, JS, CSS 代码

/// <summary>

/// 过滤 HTML, JS, CSS 代码

/// </summary>

/// <paramname = "html"> 参数传入 </param>

/// <returns> </returns>

publicstaticstringcheckstr (Stringhtml)

{

System.text.regularexpressions.regexRegex1 = newSystem.text.regularexPressions.regex (@"<script [/s/s]+</script*>", system.text.regularexpressions.regexoptions.ignorecase);

System.Text.regularexPressions.RegexRegex2 = newSystem.text.regularexPressions.regex (@"href*=*[/s/s]*script*:", system.text.regularexpressions.regexoptions.ignorecase);

System.text.regularexpressions.regexRegex3 = newSystem.text.regularexPressions.regex (@"no [/s/s]*=", system.text.regularexpressions.regexoptions.ignorecase);

System.Text.RegularexPressions.regexRegex4 = newSystem.text.regularexPressions.regex (@"<iframe [/s/s]+</iframe*>", system.text.regularexpressions.regexoptions.ignorecase);

System.text.regularexpressions.regexRegex5 = newSystem.text.regularexPressions.regex (@"<frameset [/s/s]+</frameset*>", system.text.regularexpressions.regexoptions.ignorecase);

System.text.regularexPressions.regexRegex6 = newSystem.text.regularexPressions.regex (@"/<img [^/>]+/>", system.text.regularexpressions.regexoptions.ignorecase);

System.text.regularexPressions.regexRegex7 = newSystem.text.regularexPressions.regex (@"</p>", system.text.regularexpressions.regexoptions.ignorecase);

System.text.regularexpressions.regexRegex8 = newSystem.text.regularexPressions.regex (@"<p>", system.text.regularexpressions.regexoptions.ignorecase);

System.text.regularexPressions.regexRegex9 = newSystem.text.regularexPressions.regex (@"<[^>]*>", system.text.regularexpressions.regexoptions.ignorecase);

html = regex1.replace (html, ""); // 过滤 <Script> </script> 标记

html = regex2.replace (html, ""); // 过滤 href = javascript :( <a>) 属性

html = regex3.replace (html, "_ disibledevent ="); // 过滤其它控件的 on ... 事件

html = regex4.replace (html, ""); // 过滤 iframe

html = regex5.replace (html, ""); // 过滤 Frameset

html = regex6.replace (html, ""); // 过滤 Frameset

html = regex7.replace (html, ""); // 过滤 Frameset

html = regex8.replace (html, ""); // 过滤 Frameset

html = regex9.replace (html, "");

html = html.replace ("", "" ");

html = html.replace ("</strong>", "");

html = html.replace ("<strong>", "");

returnhtml;

}

#endregion

#region /// 过滤 P/P 代码

/// <summary>

/// 过滤 P/P 代码

/// </summary>

/// <paramname = "html"> 参数传入 </param>

/// <returns> </returns>

publicstaticstringinputstr (Stringhtml)

{

html = html.replace (@"/<img [^/>]+/>", "");

html = html.replace (@"<p>", "");

html = html.replace (@"</p>", "");

returnhtml;

}

#endregion

/// <summary>

/// 截取字符串

/// </summary>

/// <paramname = "str"> </param>

/// <paramname = "length"> </param>

/// <returns> </returns>

ProtectectringgetLength (Stringstr, Intlength)

{

StringStrr = str;

if (str.length> длина)

{

strr = str.substring (0, длина)+"...";

}

returnstrr;

}