c# - Parameter in event handler is not hitting while debugging -

i have eventhandler code below :

viewer.localreport.subreportprocessing += new microsoft.reporting.webforms.subreportprocessingeventhandler(localreport_subreportprocessing); 

and method parameter event handler above :

private static void localreport_subreportprocessing(object sender, subreportprocessingeventargs e) {          datetime movementdate = convert.todatetime(e.parameters[0].values[0]);          tourtransactionscontroller controller = new tourtransactionscontroller();          var movement = controller.movements();          list<movement> movementlist = new list<movement>();         movementlist.add(new movement {             destination = "test",             movementdescription = "test",             datetime = convert.todatetime("2017-09-25")         });          e.datasources.clear();          e.datasources.add(new microsoft.reporting.webforms.reportdatasource() {             name = "dsmovements",             value = movementlist         });          //throw new notimplementedexception();     } 

both of method written in web api controller. eventhandler hitting while debugging, after press f11 (step into) while debugging localreport_subreportprocessing method not hitting. why localreport_subreportprocessing method not hitting ?

any or answer appreciated.

event's not called when register / add += them.

events called when owning class invokes it.

public class eventtest {     void someoperation()     {         //do     }      public void run()     {         someoperation();         runfinished?.invoke(this, eventargs.empty); //invoke event, indicating has happened or finished     }      //the event     public event eventhandler runfinished; }  public class eventsubscriber {     eventtest _et = new eventtest();      public eventsubscriber()     {         _et.runfinished += etrunfinished; //register method, called when event occurs (is invoked)     }      public void dosomething()     {         _et.run();         console.writeline("something completed.");     }      void etrunfinished(object sender, eventargs e)     {         console.writeline("my event handler executed.");     } } 

your handler called when event fires.

when registering += or -= unregistering (add / remove) not invoked.

for more detailed tutorial please refer msdn.