Detect if a page is within a iframe - serverside

Question

How can I detect server-side (c#, asp.net mvc) if the loaded page is within a iframe? Thanks

Answer 1

I don't think the server-side can do this, so why not put a hidden control in your page that will be in the iframe? When the URL in the iframe loads, you can add some client-side code to set the hidden input to indicate you are in an iframe. The easiest check would be on the client-side in an onload method, like this:

// Set hidden input
someHiddenInput.value = self != top

It's more secure than the querystring, but it still might not be enough security for you.

My 2 cents.