Refused to display in a frame because it set X-Frame-Options to sameorigin

You cannot display a part of websites inside an iFrame. Reason being that they send an "X-Frame-Options: SAMEORIGIN" response header. This option prevents the browser from displaying iFrames that are not hosted on the same domain as the parent page. This is a security feature to prevent click-jacking. Some details at How to show https://stackoverflow.com/questions/8700636/how-to-show-google-com-in-an-iframe in an iframe?

Since asp.net mvc is adding 'X-Frame-Options' in header to prevent clickjacking under anti-forgery. You need to remove it first. You  can do this By adding following line in Gobal.asax.cs in 'Application_Start()'  

System.Web.Helpers.AntiForgeryConfig.SuppressXFrameOptionsHeader = true;

I think, it is dangerous to allow all page of the site to show in iframe for cross-origin. I worried by the possibility of using clickjacking for getting user credintial and other confidential data. I think, you should create filter and add it to the specific action you want to show in iframe as:

public class AllowCrossSiteIFrameAttribute : ActionFilterAttribute
{
     public override void OnResultExecuted(ResultExecutedContext filterContext)
     {
            filterContext.HttpContext.Response.Headers.Remove("X-Frame-Options");
            base.OnResultExecuted(filterContext);
     }
}

May you can allow to the specific referrer as: 

public class AllowCrossSiteIFrameAttribute : ActionFilterAttribute
{
   public override void OnResultExecuted(ResultExecutedContext filterContext)
   {
      filterContext.HttpContext.Response.Headers.Remove("X-Frame-Options");
      filterContext.HttpContext.Response.AddHeader("X-Frame-Options", "ALLOW-FROM https://example.com/");
      base.OnResultExecuted(filterContext);
   }
}

And you it as on action

[AllowCrossSiteIFrame]
public ActionResult allowiframepage()

yes its working for me.Thank you

System.Web.Helpers.AntiForgeryConfig.SuppressXFrameOptionsHeader = true;

I have Followed as like You but not working to me .

can you help me?