Question

When the method with the barcode parameter is called, RedirectToAction has absolutely no effect. I can see that it does indeed return to that route in the URL, but the model is not refreshed and it displays stale data.

In the SQL Server profiler I can see that the call isn’t being made to pull back the new data.

How can I force this to happen?

Incidently, the call to: public ActionResult SRScanItem(string barcode) is itself the result of a RedirectToAction from another controller.

I have handful of calls to RedirectToAction("SRPickCollectionItems") elsewhere in the same controller and these all work fine.

Any idea what may be causing this?

public ActionResult SRPickCollectionItems()
{
    IEnumerable<ISRPickingItemSummary> items = 
        SRPickingItemsViewModel.
        GetDisplayableChunk(ApplicationState.CollectionId.ToString(),
                            ApplicationState.AssistantNumber);

    return View(items);            
}

public ActionResult SRScanItem(string barcode)
{
    DataLayer.Instance.AddStockroomFoundItem(barcode, ApplicationState.CollectionId, ApplicationState.AssistantNumber);
    return RedirectToAction("SRPickCollectionItems");   
}

Answer 1

Maybe the redirect is going to a cached page.

Could you try and decorate SRPickCollectionItems with

[OutputCache(Duration = 0)]