Question

I call the same controller many times from _Layout.cshtml view. So in this controller, how can I discover at runtime if it’s still same page that is rendering or if a brand new page request is being made?

In asp.net you can use ispostback to figure this out. How can you tell if a brand new request is being made for a page in MVC3?

Thanks

Answer 1

There’s no such think on MVC. You’ve actions that can handle POSTs, GETs or both. You can filter what each action can handle using [HttpPost] and [HttpGet] attributes.

On MVC, the closest you can get to IsPostBack is something like this within your action:

public ActionResult Index() 
{
    if (Request.HttpMethod == "POST") 
    {
        // Do something
    }

    return View();
}

Therefore,

[HttpPost]
public ActionResult Create(CreateModel model) 
{
    if (Request.HttpMethod == "POST") // <-- always true
    {
        // Do something
    }

    return RedirectToAction("Index");
}