问题:

I have a set of asp.net pages which I wish they should only be accessible or loaded when they are loaded from an IFrame. If an attempt is made to access the pages directly via browser address bar then the page should not be displayed at all or display the message to the user.

I tried using cookies and sesions, but they are not that effective becuase once the cookie/session is created you can access the pages directly from browser, bypassing IFrame.

My development platform is asp.net 2.0+, vs2008, C# 2.0+

回答1:

This is an example of one of the few times it is better to put the script in the head tag.

<html>
<head>
    <title>sandBox</title>
    <script type="text/javascript">
        if (frameElement == null) {
            //change location or close
            window.location = "http://stackoverflow.com";
            // or window.close();
        }
    </script>
</head>
<body>
content goes here
</body>
</html>

回答2:

Try this inside your head tag:

<script>
if(window.self !== window.top); //inside an iframe
else window.location = "http://stackoverflow.com/" // Outside
</script>

How to Force the page to be loaded only within an

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