Avoid duplicate event subscriptions in C# -


How would you suggest the best way to avoid duplicate event subscriptions? If this line of code executes in two places, the event will run twice. I am trying to avoid subscribing to the third party event twice. 

  theOBject.TheEvent + = RunMyCode;

In my representative setter, I can run it effectively ... 

  theOBject .Event - = RunMyCode; TheOBject.TheEvent + = RunMyCode;

But is this the best way?

I think, in the most effective way, create an asset to your event and concurrency as this Adding the locks to this : 

  Private EventHandler _theEvent; Private object _eventLock = new object (); Public Event EventHandler TheEvent {add {lock (_eventLock) {_theEvent - = value; _theEvent + = value; }} Remove {Lock (_eventLock) {_theEvent - = Value; }}}

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