PdfViewer.NavigationPaneInitialVisibility Property

Specifies the initial visible state of a navigation pane after loading a new PDF document.

Assembly: DevExpress.XtraPdfViewer.v18.2.dll

Declaration

[DefaultValue(PdfNavigationPaneVisibility.Default)]
public PdfNavigationPaneVisibility NavigationPaneInitialVisibility { get; set; }

<DefaultValue(PdfNavigationPaneVisibility.Default)>
Public Property NavigationPaneInitialVisibility As PdfNavigationPaneVisibility

Type	Default	Description
PdfNavigationPaneVisibility	Default	A PdfNavigationPaneVisibility enumerator value defining the visibility of a navigation pane.

Available values:

Name	Description
Default	When this option is specified for the `PdfViewer.NavigationPaneInitialVisibility` property, it sets the PdfViewer.NavigationPaneVisibility property either to Visible (a document contains bookmarks) or to Collapsed (a document does not have bookmarks and attachments tab is shown in the collapsed state). This option is not supported for the PdfViewer.NavigationPaneVisibility property (the ArgumentOutOfRangeException is thrown).
Hidden	The PDF navigation pane is hidden.
Collapsed	The PDF navigation pane is collapsed.
Visible	This navigation pane is displayed.
Expanded	The PDF navigation pane is expanded.

Use the NavigationPaneInitialVisibility property to specify the initial visible state of a navigation pane (where bookmarks and attachments can be located) after a PDF document is loaded. The available values are PdfNavigationPaneVisibility.Default, PdfNavigationPaneVisibility.Collapsed, PdfNavigationPaneVisibility.Expanded, PdfNavigationPaneVisibility.Hidden and PdfNavigationPaneVisibility.Visible.

When the NavigationPaneInitialVisibility property is set to PdfNavigationPaneVisibility.Default, it sets the PdfViewer.NavigationPaneVisibility property either to PdfNavigationPaneVisibility.Visible (if the document contains bookmarks) or to PdfNavigationPaneVisibility.Collapsed (if a document does not have bookmarks and the attachments is collapsed).