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In a .NET world ViewState can get out of hand in a hurry.  In some of our more intense pages the ViewState created by controls could reach well into the 50% range of the page size.  A brief search by a coworker found this solution.

The main thing to take from this article is to insert this snippet of code in your page, or custom base page:

    protected override PageStatePersister PageStatePersister
    {
        get
        {
            return new SessionPageStatePersister(this);
        }
    }

This little beauty of code can reduce the ViewState by 90+%, which is significant.

Now the obvious limitation to this is that your real ViewState is now stored in session, so this will add some overhead to your web application.

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