SubTransactionRollBack Method

Discards all changes made to the model during the sub-transaction.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Syntax
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public TransactionStatus RollBack()

Return Value

TransactionStatus
If finished successfully, this method returns TransactionStatus.RolledBack.
Exceptions
ExceptionCondition
InvalidOperationException A sub-transaction can only be active inside an open Transaction. -or- The sub-transaction's current status is not TransactionStatus.Started, therefore it may not be committed or rolled back.
Remarks

The parent transaction (or a parent sub-transaction, if any) can still be committed, but the changes rolled back by this method will not be part of the committed transaction.

RollBack can be called only when all inner sub-transaction, if any, are finished, i.e. they were either committed or rolled back. If there is still a sub-transaction open, an attempt to roll this outer sub-transaction back will cause an exception.

See Also