# Properties, Methods and Events ## Properties | Property | Description | | ------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | **NavigationViewElement** | Gets the RadPageViewNavigationViewElement, which is the main element for RadNavigationView. | | **DisplayMode** | Gets or sets the display mode of the view element. The Default value Expanded. | | **HeaderHeight** | Gets or sets the height of the header element. The default value is 40. | | **ExpandedPaneWidth** | Gets or sets the width of the pane with the items when the view element is expanded. The default value is 280. | | **CollapsedPaneWidth** | Gets or sets the width of the pane with the items when the view element is collapsed. The default value is 40. | | **CompactModeThresholdWidth** | Gets or sets a threshold determining at what width the view element will change from Collapsed to Compact display mode and vice versa. The default value is 641. | | **ExpandedModeThresholdWidth** | Gets or sets a threshold determining at what width the view element will change from Expanded to Collapsed display mode and vice versa. The default value is 1008. | | **HierarchyIndent** | Gets or sets the hierarchical indentation of the child items. The default value is 20. | | **ExpandedGlyph** | Gets or sets the glyph used for the items's expander element, when the item IsExpanded property is true. | | **CollapsedGlyph** | Gets or sets the glyph used for the items's expander element, when the item IsExpanded property is false. | | **ItemExpandCollapseMode** | Gets or sets the expand/collapse mode of navigation items when they have hierarchical children. | | **HierarchyPopupExpandMode** | Gets or sets the expand/collapse mode of navigation items when they have hierarchical children. | ## RadPageViewNavigationViewElement's Properties | Property | Description | | -------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | **HamburgerButton** | Gets the hamburger button. | | **HeaderElement** | Gets the header element. | | **Popup** | Gets the popup used in the Minimal and Compact modes. | | **PopupStack** | Gets the popup stack element. | | **IsCollapsed** | Determines whether the view element is collapsed. | | **NewItemVisibility** | Gets or sets the visibility of the internal NewItem. | | **AllowAnimation** | Gets or sets a value indicating whether to use animation when collapsing and expanding the menu. | | **AnimationInterval** | Gets or sets the animation interval. | | **AnimationFrames** | Gets or sets the animation frames. | | **MinumumHierarchicalPopupSize** | Gets or sets the minimum size of the hierarchical popup. The desired size is calculated automatically according to the desired sizes of the items. | ## RadPageViewNavigationViewElement's Methods | Method | Description | | ------------ | ----------------------------- | | **Expand** | Expands the NavigationView. | | **Collapse** | Collapses the NavigationView. | ## Events | Event | Description | | -------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Collapsing** | Occurs before the hamburger menu is collapsed. | | **Expanding** | Occurs before the hamburger menu is expanded. | | **Collapsed** | Occurs before the hamburger menu is collapsed. | | **Expanded** | Occurs after the hamburger menu is expanded. | | **ItemCollapsing** | Occurs before a hierarchical navigation item is collapsed. | | **ItemExpanding** | Occurs before a hierarchical navigation item is expanded. | | **ItemCollapsed** | Occurs after a hierarchical navigation item is collapsed. | | **ItemExpanded** | Occurs after a hierarchical navigation item is expanded. | | **ItemPopupOpening** | Occurs before a hierarchical popup associated with a RadPageViewNavigationViewItem | | **ItemPopupOpened** | Occurs after a hierarchical popup associated with a RadPageViewNavigationViewItem has opened. | | **ItemPopupClosing** | Occurs before a hierarchy popup associated with a RadPageViewNavigationViewItem closes. The actual item is passed as the sender in the event handler. | | **ItemPopupClosed** | Occurs after a hierarchy popup associated with a RadPageViewNavigationViewItem has closed. The actual item is passed as the sender in the event handler. | ## See Also * [Navigation View](https://www.telerik.com/products/winforms/documentation/controls/pageview/navigation-view/overview) * [Getting Started](https://www.telerik.com/products/winforms/documentation/controls/navigationview/getting-started) * [Structure](https://www.telerik.com/products/winforms/documentation/controls/navigationview/structure)