How to prevent whole site to load in iframe except one page

Question

I've implemented an asp.net MVC site. I want to prevent the whole site to load in the iframe except one page. I added below code under web config.

<httpProtocol>

<customHeaders>

<add name="X-Frame-Options" value="SAMEORIGIN" />

</customHeaders>

</httpProtocol>

This code of web config prevents the whole site to load in the iframe. I try to remove 'X-Frame-Options' option from the view where only I want to allow the iframe

public ActionResult Ads()

{

Response.Headers.Remove("X-Frame-Options");

return View();

}

But when i run this code X-Frame-Options not removed from header. Please suggest me what can I do?