Namespaces
- Autodesk.Revit.ApplicationServices Namespace
- Autodesk.Revit.Attributes Namespace
- Autodesk.Revit.Creation Namespace
- Autodesk.Revit.DB Namespace
- Autodesk.Revit.DB.Analysis Namespace
- Autodesk.Revit.DB.Architecture Namespace
- Autodesk.Revit.DB.DirectContext3D Namespace
- Autodesk.Revit.DB.Electrical Namespace
- Autodesk.Revit.DB.Events Namespace
- Autodesk.Revit.DB.ExtensibleStorage Namespace
- Autodesk.Revit.DB.ExternalService Namespace
- Autodesk.Revit.DB.Fabrication Namespace
- Autodesk.Revit.DB.IFC Namespace
- Autodesk.Revit.DB.Infrastructure Namespace
- Autodesk.Revit.DB.Lighting Namespace
- Autodesk.Revit.DB.Macros Namespace
- Autodesk.Revit.DB.Mechanical Namespace
- Autodesk.Revit.DB.Plumbing Namespace
- Autodesk.Revit.DB.PointClouds Namespace
- Autodesk.Revit.DB.Steel Namespace
- Autodesk.Revit.DB.Structure Namespace
- Autodesk.Revit.DB.Structure.StructuralSections Namespace
- Autodesk.Revit.DB.Visual Namespace
- Autodesk.Revit.Exceptions Namespace
- Autodesk.Revit.UI Namespace
  - AddInCommandBinding Class
  - ButtonData Class
  - ColorSelectionDialog Class
  - ComboBox Class
  - ComboBoxData Class
  - ComboBoxMember Class
  - ComboBoxMemberData Class
  - ContextualHelp Class
  - ContextualHelpType Enumeration
  - DockablePane Class
  - DockablePaneId Class
  - DockablePaneProviderData Class
  - DockablePanes Class
  - DockablePanes.BuiltInDockablePanes Class
  - DockablePaneState Class
  - DockPosition Enumeration
  - DoubleClickAction Enumeration
  - DoubleClickOptions Class
  - DoubleClickTarget Enumeration
  - EditorInteraction Class
  - EditorInteractionType Enumeration
  - ExternalApplicationArray Class
  - ExternalApplicationArrayIterator Class
  - ExternalCommandData Class
  - ExternalEvent Class
  - ExternalEventRequest Enumeration
  - FaceBasedPlacementType Enumeration
  - FamilyInstancePlacingArgs Class
  - FileDialog Class
  - FileOpenDialog Class
  - FileSaveDialog Class
  - FilterDialog Class
  - IControllableDropHandler Interface
  - IDockablePaneProvider Interface
  - IDropHandler Interface
  - IExternalApplication Interface
  - IExternalCommand Interface
  - IExternalCommandAvailability Interface
    - IExternalCommandAvailability Members
    - IExternalCommandAvailability Methods
  - IExternalEventHandler Interface
  - IExternalResourceUIServer Interface
  - IFrameworkElementCreator Interface
  - ItemSelectionDialogResult Enumeration
  - PostableCommand Enumeration
  - PreviewControl Class
  - PromptForFamilyInstancePlacementOptions Class
  - PulldownButton Class
  - PulldownButtonData Class
  - PushButton Class
  - PushButtonData Class
  - RadioButtonGroup Class
  - RadioButtonGroupData Class
  - Result Enumeration
  - RevitCommandId Class
  - RevitLinkUIUtils Class
  - RibbonButton Class
  - RibbonButtonOptions Class
  - RibbonItem Class
  - RibbonItemData Class
  - RibbonItemType Enumeration
  - RibbonPanel Class
  - ScrollbarVisibility Enumeration
  - SelectionUIOptions Class
  - SetupEnergySimulationDialog Class
  - SetupEnergySimulationDialogResult Enumeration
  - SketchGalleryOptions Enumeration
  - SplitButton Class
  - SplitButtonData Class
  - Tab Enumeration
  - TabbedDialogAction Delegate
  - TabbedDialogExtension Class
  - TableViewUIUtils Class
  - TaskDialog Class
  - TaskDialogCommandLinkId Enumeration
  - TaskDialogCommonButtons Enumeration
  - TaskDialogIcon Enumeration
  - TaskDialogResult Enumeration
  - TextBox Class
  - TextBoxData Class
  - TextEditorOptions Class
  - ThinLinesOptions Class
  - ToggleButton Class
  - ToggleButtonData Class
  - UIApplication Class
  - UIControlledApplication Class
  - UIDocument Class
  - UIFabricationUtils Class
  - UISaveAsOptions Class
  - UITheme Enumeration
  - UIThemeManager Class
  - UIView Class
- Autodesk.Revit.UI.Events Namespace
- Autodesk.Revit.UI.Macros Namespace
- Autodesk.Revit.UI.Mechanical Namespace
- Autodesk.Revit.UI.Plumbing Namespace
- Autodesk.Revit.UI.Selection Namespace
What's New

IExternalCommandAvailability Members

The IExternalCommandAvailability type exposes the following members.

Methods

	Name	Description
	IsCommandAvailable	Implement this method to provide control over whether your external command is enabled or disabled.

Methods

See Also