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ViewPageBase.VIEWSTATE_CTRL_ENUM

ViewPageBase.VIEWSTATE_CTRL_ENUM is the public nested enum consumed by ViewPageBase.ViewStateInSession to opt a page out of the default page-embedded ViewState and into session-backed storage instead, either for external users only or unconditionally for all users (BR-MVC-030). It exists because the framework's own PageStatePersister override needs an explicit, per-page decision on this trade-off rather than a single global switch.

Purpose

  • Selects the ViewState persistence strategy for a page instance: standard page-embedded state, session-backed state limited to non-internal callers, or session-backed state for every caller.
  • Backs the EXT_VIEWSTATE_SESSION configuration fallback, which the overridden PageStatePersister property consults when this enum is left at its default.

Context

  • Namespace: SAIF.Presentation.Web.MVC*
  • Assembly/package: SAIF.Presentation.Web.MVC

Public members

Member Signature Purpose
NONE NONE Default. ViewState is persisted using the standard ASP.NET page-embedded mechanism
EXTERNAL_USERS EXTERNAL_USERS ViewState is moved into session storage only when the current caller's address is not on the internal network (i.e. not matching 10.*)
ALL_USERS ALL_USERS ViewState is unconditionally moved into session storage for every caller

Behavioral notes

  • Per the type's own developer documentation comment, this setting should only be changed with guidance and support of the architecture team, reflecting its impact on server memory and session size.*
  • When ViewStateInSession is left at NONE, the EXT_VIEWSTATE_SESSION AppSettings key can still force session-backed persistence for external callers, so NONE does not guarantee page-embedded ViewState in every deployment.

Note: Statements marked with * were inferred from code structure, naming conventions, or contextual evidence where direct confirmation was not available in source artifacts.

Sources

  • SAIF.Presentation.Web.MVC/ViewPageBase.aspx.vb