.NET MVC : Calling RedirectToAction passing a model?

Question

I got a view List.aspx that is bound to the class Kindergarten

In the controller:

public ActionResult List(int Id) {   Kindergarten k = (from k1 in _kindergartensRepository.Kindergartens                     where k1.Id == Id                     select k1).First();    return View(k); } 

That works.

But this doesn't

[AcceptVerbs(HttpVerbs.Post)] public ActionResult Add(...) {   //...   Kindergarten k = ...   return RedirectToAction("List", k); } 

How should I redirect to the list view, passing k as the model?

Thanks!

Answer 1

I don't believe ModelBinding exists when using RedirectToAction. Your best options, however, is to use the TempData collection to store the object, and retrieve it in the following action.

[AcceptVerbs(HttpVerbs.Post)] public ActionResult Add(...) {   //...   Kindergarten k = ...   TempData["KG"] = k;   return RedirectToAction("List"); } 

In your List Action

public ActionResult List() {     Kindergarten k = (Kindergarten)TempData["KG"];    // I assume you need to do some stuff here with the object,     // otherwise this action would be a waste as you can do this in the Add Action   return View(k); } 

Note: TempData collection only holds object for a single subsequent redirect. Once you make any redirect from Add, TempData["KG"] will be null (unless you repopulate it)