ViewData and TempData are both used to pass data from Controller into View in
ASP.NET MVC model. This article is trying to point out their's difference.
ViewData is only available in current request but TempData, which stored in user
session, whose life will be around current and the right next requests. In the
other word, if you are trying to share data between two continued request or
during a redirection then TempData will be your choice.
BTW, to ensure you get
the data by either ViewData or TempData you can use the code
<%=ViewData["name"]
?? TempData["name"]%>
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