2020 Namespace
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Autodesk.Revit.Exceptions

Name Return Type Description
C ApplicationException None The exception that is thrown when a non-fatal application error occurs.
C ArgumentException None The exception that is thrown when one of the arguments provided to a method is not valid.
C ArgumentNullException None The exception that is thrown when . a null reference ( Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.
C ArgumentOutOfRangeException None The exception that is thrown when the value of an argument is outside the allowable range of values as defined by the invoked method.
C ArgumentsInconsistentException None The exception that is thrown when each individual argument is OK, but a joint constraint is violated.
C AutoJoinFailedException None The exception that is thrown when an autojoin operation failed.
C BackgroundTaskCancelledException None The exception thrown when Revit cancels a background operation. Third-party developers are not expected to catch and handle this exception. Instead, if allowed to propagate back to Revit code, it will be handled by Revit.
C CannotOpenBothCentralAndLocalException None The exception thrown when both a central model and also a local file for the same central model are opened in the same session.
C CentralFileCommunicationException None The exception thrown when there is a network communication error involving a file-based central model.
C CentralModelAccessDeniedException None The exceptions thrown when a central model can be reached but access is denied due to a lack of access privileges.
C CentralModelAlreadyExistsException None Exception is thrown when the central model already exists at the specified location.
C CentralModelContentionException None The exception thrown when a central model is busy (locked) and the operation is canceled.
C CentralModelException None The base class for exceptions that are common to both file-based and server-based central models or specific to just file-based central models.
C CorruptModelException None The exception that is thrown when the model is or seems corrupt.
C DirectoryNotFoundException None The exception that is thrown when the specified directory could not be found.
C DisabledDisciplineException None The exception that is thrown when the function cannot execute because a discipline is disabled. The exception specifies which discipline(s) would let the operation succeed.
C ExternalApplicationException None The exception that is thrown when an issue in the Add-Ins resulted in an unexpected error.
C FamilyContextException None The exception that is thrown when an operation is invalid in the current family document, because of the type of family.
C FileAccessException None The exception that is thrown when the specified file could not be accessed, e.g. read-only, locked by the OS etc.
C FileArgumentAlreadyExistsException None The exception that is thrown when the specified file exists.
C FileArgumentNotFoundException None The exception that is thrown when a method received a filename as an argument and requires it to exist as a precondition.
C FileNotFoundException None The exception that is thrown when the specified file could not be found.
C ForbiddenForDynamicUpdateException None The exception that is thrown when making or attempting to make changes that are forbidden during dynamic updates to the model.
C FunctionId None The information of a function throwing an exception.
C InapplicableDataException None The exception that is thrown when attempting to access a piece of data that is structurally not part of an object at the moment.
C InsufficientResourcesException None The exception that is thrown when the OS runs out of resources, e.g. memory, disk space, or USER or GDI objects.
C InternalException None The exception that is thrown when an issue in the Revit code resulted in an unexpected error.
C InvalidDataStreamException None The exception that is thrown when the reading or saving operation failed due to parsing error.
C InvalidObjectException None The exception that is thrown when referencing an object that is no longer valid.
C InvalidOperationException None The exception that is thrown when a method call is invalid for the object's current state.
C InvalidPathArgumentException None The exception that is thrown when a method received a pathname as an argument, but the pathname is illegal: too long, invalid characters, etc.
C IOException None The exception that is thrown when an I/O error occurs.
C ModificationForbiddenException None The exception that is thrown by the undo transaction framework when a modification operation is not allowed.
C ModificationOutsideTransactionException None The exception that is thrown by the undo transaction framework when the modification operation to the model is outside of a transaction.
C NotTransmittedModelException None The exception thrown when OpenOptions were provided to deal with a transmitted model, but the model is not transmitted.
C ObjectAccessException None The exception that is thrown when an operation is denied, e.g. an attempt was made to set a read-only property.
C OperationCanceledException None The exception that is thrown when an operation is unexpectedly cancelled.
C OptionalFunctionalityNotAvailableException None The exception that is thrown when the optional functionality is not available in the installed Revit
C OutdatedDirectlyOpenedCentralException None The exception thrown when a central model is opened directly and its copy in the session is outdated. If the operation is supported for local files, first resave as local, and try again.
C RegenerationFailedException None The exception that is thrown when a regeneration operation failed.
C RevitServerCollaborationNotAvailableException None The exception that is thrown when Collaboration fails because of an external resource (e.g., Amazon S3) failure.
C RevitServerCommunicationException None The exception that is thrown when there is any network communication error happening.
C RevitServerException None The exception that is base class for all exceptions originating from the Revit server.
C RevitServerInternalException None The exception that is thrown when there is any server internal error happening.
C RevitServerUnauthenticatedUserException None The exception that is thrown when an unauthenticated user attempts to initiate a call to RevitServer.
C RevitServerUnauthorizedException None The exception that is thrown when a call to the server is unauthorized.
C TransientElementCreationException None The exception that is thrown when TransientElementCreationScope is used incorrectly.
C TransmittedModelException None The exception thrown when model was transmitted (sent by eTransmit) and insufficient OpenOptions were provided to handle its transmitted flag.
C WrongUserException None The exception thrown when a local model is manipulated under a different username than it was created with.