ASP.NET MVC does browser refresh make TempData useless?

Question

If I redirect to a new page passing TempData to initialise the page it works fine, however if the user presses the refresh button in their browser the TempData is no-longer

Answer 1

TempData exists specifically to store the data for just one page load/action/redirect. If you need the data to persist after a refresh you should place it in the ViewData collection so long as the action that is serving the refresh request is the same one as was initially requested (i.e. the ViewData value was not added prior to a Redirect).