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  [Collapse]DevExpress.XtraNavBar
   [Expand]Collection Class
   [Expand]CollectionItemEventArgs Class
    CollectionItemEventHandler Delegate
   [Expand]ComponentCollectionItem Class
   [Expand]ICollectionItem Interface
    LinkSelectionModeType Enumeration
   [Expand]NavBarAppearances Class
   [Expand]NavBarCalcGroupClientHeightEventArgs Class
    NavBarCalcGroupClientHeightEventHandler Delegate
   [Expand]NavBarCalcHintSizeEventArgs Class
    NavBarCalcHintSizeEventHandler Delegate
   [Collapse]NavBarControl Class
     NavBarControl Members
     NavBarControl Constructor
    [Expand]NavBarControl Properties
    [Collapse]NavBarControl Events
      ActiveGroupChanged Event
      BeforeLoadLayout Event
      CalcHintSize Event
      CustomDrawBackground Event
      CustomDrawGroupCaption Event
      CustomDrawGroupClientBackground Event
      CustomDrawGroupClientForeground Event
      CustomDrawHint Event
      CustomDrawLink Event
      GetHint Event
      GroupCollapsed Event
      GroupCollapsing Event
      GroupExpanded Event
      GroupExpanding Event
      HotTrackedLinkChanged Event
      LayoutUpgrade Event
      LinkClicked Event
      LinkPressed Event
      NavDragDrop Event
      NavDragOver Event
      NavPaneMinimizedGroupFormShowing Event
      NavPaneOptionsApplyGroupFont Event
      NavPaneOptionsCanEditGroupFont Event
      NavPaneOptionsReset Event
      NavPaneStateChanged Event
      SelectedLinkChanged Event
    [Expand]NavBarControl Methods
   [Expand]NavBarCustomDrawHintEventArgs Class
    NavBarCustomDrawHintEventHandler Delegate
   [Expand]NavBarCustomHintEventArgs Class
    NavBarDragDrop Enumeration
   [Expand]NavBarGetHintEventArgs Class
    NavBarGetHintEventHandler Delegate
   [Expand]NavBarGroup Class
   [Expand]NavBarGroupControlContainer Class
   [Expand]NavBarGroupEventArgs Class
    NavBarGroupEventHandler Delegate
    NavBarGroupStyle Enumeration
   [Expand]NavBarHitInfo Class
    NavBarHitTest Enumeration
    NavBarImage Enumeration
   [Expand]NavBarItem Class
   [Expand]NavBarItemLink Class
   [Expand]NavBarLayoutOptions Class
   [Expand]NavBarLinkEventArgs Class
    NavBarLinkEventHandler Delegate
    NavBarState Enumeration
    NavBarStringId Enumeration
    NavBarViewKind Enumeration
   [Expand]NavElement Class
   [Expand]NavGroupCollection Class
   [Expand]NavItemCollection Class
   [Expand]NavLinkCollection Class
    NavPaneState Enumeration
   [Expand]NavReadOnlyLinkCollection Class
   [Expand]OptionsNavPane Class
    SkinExplorerBarViewScrollStyle Enumeration
  [Expand]DevExpress.XtraNavBar.ViewInfo
  [Expand]DevExpress.XtraPdfViewer
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 End-User Documentation

NavBarControl.GroupCollapsing Event

Occurs when a group is about to be collapsed.

Namespace:DevExpress.XtraNavBar
Assembly:DevExpress.XtraNavBar.v17.1.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type DevExpress.XtraNavBar.NavBarGroupCancelEventArgs containing data related to this event.

Expanded Remarks

This event occurs when a group is collapsed by the end-user or in code. The event parameter's NavBarGroupEventArgs.Group property identifies the group being collapsed. Set the event's Cancel parameter to true to forbid the collapse operation.

Expanded See Also

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