Transaction

Description:
Transactions are context-like objects that guard any changes made to a Revit model

Remarks:

Any change to a document can only be made while there is an active transaction open for that document. Changes do not become part of the document until the active transaction is committed. Consequently, all changes made in a transaction can be rolled back either explicitly or implicitly by the transaction's destructor.

A document can have only one transaction open at any given time.

Transactions cannot be started when the document is in read-only mode, either permanently or temporarily. See the Document class methods IsReadOnly and IsModifiable for more details.

Transactions in linked documents are not permitted, for linked documents are not allowed to be modified.

If a transaction was started and not finished yet by the time the Transaction object is about to be disposed, the default destructor will roll it back automatically, thus all changes made to the document while this transaction was open will be discarded. It is not recommended to rely on this default behavior though. Instead, it is advised to always call either Commit or RollBack explicitly before the transaction object gets disposed. Please note that unless invoked explicitly the actual destruction of an object in managed code might not happen until the object is collected by the garbage collector.

Inheritance Hierarchy:
System.Object
Autodesk.Revit.DB.Transaction

public class Transaction : IDisposable

Public Class Transaction
	Implements IDisposable

public ref class Transaction : IDisposable

type Transaction = 
    class
        interface IDisposable
    end

Name	Return Type	Description	Inherited From
C Transaction(Document)	None	Instantiates a transaction object.
C Transaction(Document, String)	None	Instantiates a transaction object

Name	Return Type	Description	Inherited From
M Commit()	TransactionStatus	Commits all changes made to the model during the transaction.
M Commit(FailureHandlingOptions)	TransactionStatus	Commits all changes made to the model during the transaction.
M Dispose()	None	Releases all resources used by the Transaction
M Equals	None	Determines whether the specified object is equal to the current object. (Inherited from Object )	Object
M GetFailureHandlingOptions()	FailureHandlingOptions	Returns the current failure handling options.
M GetHashCode	None	Serves as the default hash function. (Inherited from Object )	Object
M GetName()	String	Returns the transaction's name.
M GetStatus()	TransactionStatus	Returns the current status of the transaction.
M GetType	None	Gets the Type of the current instance. (Inherited from Object )	Object
M HasEnded()	Boolean	Determines whether the transaction has ended already.
M HasStarted()	Boolean	Determines whether the transaction has been started yet.
M RollBack()	TransactionStatus	Rolls back all changes made to the model during the transaction.
M RollBack(FailureHandlingOptions)	TransactionStatus	Rolls back all changes made to the model during the transaction.
M SetFailureHandlingOptions(FailureHandlingOptions)	None	Sets options for handling failures to be used when the transaction is being committed or rolled back.
M SetName(String)	None	Sets the transaction's name.
M Start()	TransactionStatus	Starts the transaction.
M Start(String)	TransactionStatus	Starts the transaction with an assigned name.
M ToString	None	Returns a string that represents the current object. (Inherited from Object )	Object

Name	Return Type	Description	Inherited From
P IsValidObject	Boolean	Specifies whether the .NET object represents a valid Revit entity.