Answer Posted / sudeesh i.g.

view state is state management technique used in ASP.net.
Its visibility is inside a current page. It is like session
state difference is that session for entire project all but
view state is visible for entire page. The data in view
state one page can't access from other page. it clear the
data when unload the page. it take more memory, it is not
suitable with gridview, detailsview, listview controls.

eg:

viewstate["id"]=request.querystring["id"];

or

viewstate["id"]=convert.toint32(gridview.datakeys[index][""].string();


like lot of example

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