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whats are methods to keeping datasource for a gridview.
situation :
I have a query which can take 5 to 10 seconds (a lot of link on a lot of data).
The result is too big for a page so I have a paging on my grid.
But, every time I use the pageIndexChanged, I need to get the datasource again.
So I want to know how I can keep my datasource.
Is it possible? NOT by session.
It is possible, I have used a custom (server-side) viewstate provider to cache your datasource.
*Updated: There is a pretty good article on custom viewstate providers (with sample code) here: http://www.codeproject.com/Articles/8001/ViewState-Provider-an-implementation-using-Provide
However, I would strongly recommend improving your query to limit the data to that which the user really wants to see. Large grids that have many more rows than the user is truly interested in are unwieldy from memory, processor, bandwidth, and user-experience perspectives. Try to find a better way.