c# - Calling EventHandlers for static method -

i have 1 class has 2 static methods a() , b().
here a() methods needs subscribe events like:

push.events.ondevicesubscriptionexpired += new pushsharp.common.channelevents.devicesubscriptionexpired(events_ondevicesubscriptionexpired);  push.events.ondevicesubscriptionidchanged += new pushsharp.common.channelevents.devicesubscriptionidchanged(events_ondevicesubscriptionidchanged);  

i kept them in constructor of class not working static methods when controls pass static method dont pass through constructor.
here want 2 things :

1. how set eventhandler in class saved static methods?
2. how subscribe , unsubscribe them can't overlap?

you can try doing want in static constructor.

public class myclass {     static myclass()     {        // todo : attach static event handlers here     } } 

please note can use static properties, fields, events, etc in here. if object singleton, there other implications , should read jon skeet's article on singleton implementation in c# full view of things.