Revit 2025 API
Revit |
The class is used as a base class for the arguments for any pre-event.

SystemObject
SystemEventArgs
Autodesk.Revit.DB.EventsRevitAPIEventArgs
Autodesk.Revit.DB.EventsRevitAPIPreEventArgs
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SystemEventArgs
Autodesk.Revit.DB.EventsRevitAPIEventArgs
Autodesk.Revit.DB.EventsRevitAPIPreEventArgs
More
Namespace: Autodesk.Revit.DB.Events
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Syntax
The RevitAPIPreEventArgs type exposes the following members.

Name | Description | |
---|---|---|
![]() | Cancellable |
Indicates whether an event may be cancelled by an event delegate.
(Inherited from RevitAPIEventArgs) |
![]() | IsValidObject |
Specifies whether the .NET object represents a valid Revit entity.
(Inherited from RevitAPIEventArgs) |

Name | Description | |
---|---|---|
![]() | Cancel | When the event is cancellable, may call the Cancel() method to cancel it. |
![]() | Dispose | (Inherited from RevitAPIEventArgs) |
![]() | Equals | Determines whether the specified object is equal to the current object. (Inherited from Object) |
![]() | GetHashCode | Serves as the default hash function. (Inherited from Object) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object) |
![]() | IsCancelled |
Indicates whether the event is being cancelled.
(Inherited from RevitAPIEventArgs) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object) |

A pre-event is the event raised before executing the process that was related with the event.
See Also
Reference

SystemObject
SystemEventArgs
Autodesk.Revit.DB.EventsRevitAPIEventArgs
Autodesk.Revit.DB.EventsRevitAPIPreEventArgs
Autodesk.Revit.DB.EventsDocumentCreatingEventArgs
Autodesk.Revit.DB.EventsDocumentOpeningEventArgs
Autodesk.Revit.DB.EventsLinkedResourceOpeningEventArgs
Autodesk.Revit.DB.EventsRevitAPIPreDocEventArgs
Autodesk.Revit.UI.EventsApplicationClosingEventArgs
Autodesk.Revit.UI.EventsDialogBoxShowingEventArgs
Autodesk.Revit.UI.EventsDisplayingOptionsDialogEventArgs
Autodesk.Revit.UI.EventsFormulaEditingEventArgs
Autodesk.Revit.UI.EventsIdlingEventArgs
SystemEventArgs
Autodesk.Revit.DB.EventsRevitAPIEventArgs
Autodesk.Revit.DB.EventsRevitAPIPreEventArgs
Autodesk.Revit.DB.EventsDocumentCreatingEventArgs
Autodesk.Revit.DB.EventsDocumentOpeningEventArgs
Autodesk.Revit.DB.EventsLinkedResourceOpeningEventArgs
Autodesk.Revit.DB.EventsRevitAPIPreDocEventArgs
Autodesk.Revit.UI.EventsApplicationClosingEventArgs
Autodesk.Revit.UI.EventsDialogBoxShowingEventArgs
Autodesk.Revit.UI.EventsDisplayingOptionsDialogEventArgs
Autodesk.Revit.UI.EventsFormulaEditingEventArgs
Autodesk.Revit.UI.EventsIdlingEventArgs