Context.Items is only valid for the current request, it will be reset for the next requestfor your purpose, try to save it in a session or application variable or even cache or viewstate or cookie, seeNine Options for Managing Persistent User State in Your ASP.NET Application
http://msdn.microsoft.com/msdnmag/issues/03/04/ASPNETUserState/default.aspx
http://msdn.microsoft.com/msdnmag/issues/03/04/ASPNETUserState/default.aspx
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