ViewPageBase.PageModeEnum

ViewPageBase.PageModeEnum is the public nested enum that ViewPageBase.PageMode stores in ViewState, letting a derived screen record and branch on which of seven interaction modes the current page instance is rendering — including a dedicated PDF mode not present on the corresponding ViewControlBase.PageModeEnum, reflecting that full pages (unlike user controls) can render as a printable/PDF output stream.

Purpose

• Represents the interaction mode a page is currently rendering (view, update, insert, delete, print, PDF, or unknown), persisted across postbacks in ViewState via ViewPageBase.PageMode.
• Lets derived screens branch their rendering and validation logic on a single, framework-defined mode value instead of ad hoc flags.

Context

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

Public members

Member	Signature	Purpose
View	View = 0	The page is displaying data read-only
Update	Update = 1	The page is editing an existing record
Insert	Insert = 2	The page is creating a new record
Delete	Delete = 3	The page is confirming or performing a delete
Print	Print = 4	The page is rendering a print-oriented layout
PDF	PDF = 5	The page is rendering output destined for PDF generation
Unknown	Unknown = 99	No mode has been explicitly set; the default returned by ViewPageBase.PageMode before first assignment

Behavioral notes

• ViewPageBase.PageMode's getter initializes ViewState.Item("pagemode") to Unknown on first access if it was never set, so a page that never calls the setter always reports Unknown rather than View.

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