IFC transactions are context-like objects that guard any changes made to an IFC file. 
   Namespace:   Autodesk.Revit.DB.IFC  
  Assembly:   RevitAPIIFC  (in RevitAPIIFC.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2012 
Syntax
| C# | 
|---|
   |  
| Visual Basic | 
|---|
   |  
| Visual C++ | 
|---|
   |  
Remarks
 Any change to an IFC file can only be made while there is an active transaction open for that file. Changes do not become a part of the file until the active transaction is  committed  . Consequently, all changes made in a transaction can be  rolled back  either explicitly or implicitly (by the destructor).