ViewData and ViewBag are used to transfer data from controller to view.
ViewData is a dictionary of objects. It is a controller property that exposes an instance of the ViewDataDictionary class.
ViewData["Message"] = "Hello from ViewData!";
ViewBag is very similar to ViewData. ViewBag is a wrapper that provides dynamic properties for the underlying ViewData collection.
ViewBag.Message = "Hello from ViewBag!";
The best way is to pass a Model or ViewModel, a custom class specifically designed to structure data for a view.
