How do I allow Facebook crawler to access authorized content using ASP.NET MVC?

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Hi,
I have an Action method in a controller as below:

C#

[Authorize]
public ActionResult ToDo()
{
  //Do some stuff
  return View();
}

I would like to allow facebook crawler either by its user agent name or IP range to access the content of ToDo Action method even without logging in. How is that possible? your thoughts.

What I have tried:

Haven't tried so far as I am very new with web crawling and MVC.

Posted 4-Mar-17 10:52am

Barcelonista Naser

Updated 4-Mar-17 14:12pm

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Graeme_Grant · Answer 1 · 2017-03-04T14:12:00

Think of search engine spiders (including Facebook's) as a friendly guest user. They can only see what you allow a guest user to see.

This Google search link will point to pages that give you tools to have a search engine spider point-of-view... view page as a search engine spider[^]

Here are some additional Asp.Net SEO tips: Search Engine Friendly (SEO) Tips for ASP.Net Sites[^]