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- ( Default Namespace ) Namespace
- Autodesk.Navisworks.Api Namespace
  - AnimationBehavior Enumeration
  - AppearanceOverrides Class
  - Application Class
    - Application Members
    - Application Methods
    - Application Properties
    - Application Events
      - Application.ActiveDocumentChanged Event
      - Application.ActiveDocumentChanging Event
      - Application.Bim360Created Event
      - Application.Bim360Destroying Event
      - Application.DocumentAdded Event
      - Application.DocumentRemoved Event
      - Application.FileInteractiveResolved Event
      - Application.FileInteractiveResolving Event
      - Application.FileResolved Event
      - Application.FileResolving Event
      - Application.GuiCreated Event
      - Application.GuiDestroying Event
      - Application.Idle Event
      - Application.MainDocumentChanged Event
      - Application.MainDocumentChanging Event
      - Application.ProgressBeginning Event
      - Application.ProgressEnded Event
      - Application.ProgressErrorReporting Event
      - Application.ProgressMessageReporting Event
      - Application.ProgressSubOperationBegan Event
      - Application.ProgressSubOperationEnded Event
      - Application.ProgressUpdating Event
  - AxisAndAngleResult Class
  - BoundingBox2D Class
  - BoundingBox3D Class
  - CameraMode Enumeration
  - CanceledOperationException Class
  - Color Class
  - Comment Class
  - CommentCollection Class
  - CommentStatus Enumeration
  - Cursor Enumeration
  - DataProperty Class
  - DataPropertyCollection Class
  - DataPropertyNames Class
  - Document Class
  - DocumentEventArgs Class
  - DocumentFileException Class
  - DocumentFileVersion Enumeration
  - DocumentInfo Class
  - DocumentInfoParts Enumeration
  - EulerAngleResult Class
  - FileInteractiveResolvedEventArgs Class
  - FileInteractiveResolvingEventArgs Class
  - FileReferenceResolver Class
  - FileReferenceResolveResult Class
  - FileReferenceType Enumeration
  - FileResolutionEventArgs Class
  - FileResolutionResponse Enumeration
  - FileResolvedEventArgs Class
  - FileResolvingEventArgs Class
  - FileSaveEventArgs Class
  - FolderItem Class
  - Graphics Class
  - GridIntersection Class
  - GridLevel Class
  - GridLevelCollection Class
  - GridLine Class
  - GridLineCollection Class
  - GridsData Class
  - GridsOptions Class
  - GridsRenderMode Enumeration
  - GridSystem Class
  - GridSystemCollection Class
  - GroupItem Class
  - HelpIdResult Class
  - Hyperlink Class
  - HyperlinkCollection Class
  - IHasDynamicProperties Interface
  - InfoPropertyCategory Class
  - InfoPropertyCategoryCollection Class
  - KeyModifiers Enumeration
  - MaterialOverride Class
  - Matrix3 Class
  - MeasurementType Enumeration
  - Model Class
  - ModelCreatorNames Class
  - ModelGeometry Class
  - ModelItem Class
  - ModelItemCollection Class
  - ModelItemEnumerableCollection Class
  - NamedConstant Class
  - NativeHandle Class
  - PickItemResult Class
  - Point2D Class
  - Point2DList Class
  - Point3D Class
  - Point3DList Class
  - PrimitiveTypes Enumeration
  - Progress Class
  - ProgressBeginningEventArgs Class
  - ProgressEndedEventArgs Class
  - ProgressErrorReportingEventArgs Class
  - ProgressEventArgs Class
  - ProgressMessageReportingEventArgs Class
  - ProgressSubOperationBeganEventArgs Class
  - ProgressSubOperationEndedEventArgs Class
  - ProgressUpdatingEventArgs Class
  - ProjectionResult Class
  - PropertyCategory Class
  - PropertyCategoryCollection Class
  - PropertyCategoryNames Class
  - PublishProperties Class
  - Rotation3D Class
  - Rule Class
  - RuleCollection Class
  - RuntimeLoaderException Class
  - SavedItem Class
  - SavedItemChangedAction Enumeration
  - SavedItemChangedEventArgs Class
  - SavedItemCollection Class
  - SavedItemParts Enumeration
  - SavedItemReference Class
  - SavedViewpoint Class
  - SavedViewpointAnimation Class
  - SavedViewpointAnimationCut Class
  - Search Class
  - SearchCondition Class
  - SearchConditionCollection Class
  - SearchConditionComparison Enumeration
  - SearchConditionOptions Enumeration
  - SearchLocations Enumeration
  - Selection Class
  - SelectionBehavior Enumeration
  - SelectionSet Class
  - SelectionSource Class
  - SelectionSourceCollection Class
  - SheetInfo Class
  - SheetType Enumeration
  - SimulationType Enumeration
  - StereoBehaviorMode Enumeration
  - StereoOptions Class
  - StereoViewpointCalculatedEventArgs Class
  - TessellationWindingRule Enumeration
  - TextExtents2D Class
  - TextFontInfo Class
  - TextFontMetrics Class
  - Tool Enumeration
  - TooltipResult Class
  - Transaction Class
  - Transform3D Class
  - Transform3DComponents Class
  - UnitConversion Class
  - Units Enumeration
  - UnitVector3D Class
  - VariantData Class
  - VariantDataType Enumeration
  - Vector2D Class
  - Vector3D Class
  - VertexProperties Enumeration
  - View Class
  - ViewChange Enumeration
  - ViewEventArgs Class
  - Viewpoint Class
  - ViewpointDistanceType Enumeration
  - ViewpointImageFit Enumeration
  - ViewpointLighting Enumeration
  - ViewpointProjection Enumeration
  - ViewpointRenderStyle Enumeration
  - ViewpointStereoProjection Enumeration
  - ViewRedrawRequests Enumeration
  - VisibilityOverrides Class
- Autodesk.Navisworks.Api.ApplicationParts Namespace
- Autodesk.Navisworks.Api.Automation Namespace
- Autodesk.Navisworks.Api.Bim360 Namespace
- Autodesk.Navisworks.Api.Clash Namespace
- Autodesk.Navisworks.Api.ComApi Namespace
- Autodesk.Navisworks.Api.Controls Namespace
- Autodesk.Navisworks.Api.Data Namespace
- Autodesk.Navisworks.Api.DocumentParts Namespace
- Autodesk.Navisworks.Api.Plugins Namespace
- Autodesk.Navisworks.Api.Resolver Namespace
- Autodesk.Navisworks.Api.Schema Namespace
- Autodesk.Navisworks.Api.Takeoff Namespace
- Autodesk.Navisworks.Api.Timeliner Namespace

Application.MainDocumentChanging Event

Occurs when the MainDocument is about to change.

Namespace: Autodesk.Navisworks.Api
Assembly: Autodesk.Navisworks.Api (in Autodesk.Navisworks.Api.dll)

Syntax

Visual Basic
Public Shared Event MainDocumentChanging As EventHandler(Of EventArgs)

C#
public static event EventHandler<EventArgs> MainDocumentChanging

Visual C++
public: static event EventHandler<EventArgs^>^ MainDocumentChanging { void add (EventHandler<EventArgs^>^ value); void remove (EventHandler<EventArgs^>^ value); }

Syntax

See Also