What is the lifespan for items stored in ViewState?

View state is page level use only.This includes post backs (to the same page). when you redirect to other page it gets destroyed.

The items stored in ViewState live until the lifetime of the current page expires including the postbacks to the same page. More Interview Question and Answer : http://dotnet-interview-question-answer.blogspot.in/2014/09/asp.net-interview-question-and-answer.html