Intercept Pipeline Events Programmatically

Hello,


I'm wish to receive pipeline events fired by a SSIS package.


I execute the package successufully with the following code (c#):


MyEventListener eventListener = new XplorerEventListener();
DtsApplication app = new DtsApplication();
Package pkg = app.LoadPackage("c: est.dstx", null);
pkg.Execute(null, null, eventListener, null, null);


MyEventListener is inherited from DefaultEvents, overriding all OnXXX methods.


It works perfectly, however I cannot intercept the following events:


- PipelineExecutionTrees
- PipelineExecutionPlan
- PipelineExecutionInitialization
- BufferSizeTuning
- PipelineInitialization


Anyone knows how to catch those pipeline events?
TIA,
Paolo.