Quick Answer
ViewData: dictionary, requires casting when reading, ViewData["Title"] = "Home". ViewBag: dynamic wrapper over ViewData — ViewBag.Title = "Home". TempData: survives a redirect — stored in cookie or session. All three pass data from controller to view within a request. ViewData and ViewBag are equivalent; TempData is the only one that persists across redirects.
Answer
ViewData – A Dictionary<string, object> for passing data from controller to view in the same request.
ViewBag – A dynamic wrapper around ViewData for more convenient syntax.
TempData – Persists data across one redirect; cleared after it is read.
ViewData/ViewBag are for same-request communication; TempData is designed for redirect scenarios such as Post-Redirect-Get.
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Verified Answer
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