private static void Example3()
{
// first we allocate some objects. the second object we create
// depends on the first. the second object is going to hook onto
// the event exposed by the first object.
Console.WriteLine("Creating instances...");
var objectWithEvent = new ObjectWithEvent();
var objectThatHooksEvent = new HookWithAnonymousDelegate2(objectWithEvent);
// we'll set the instance to null and call the GC, but since we
// have an event still hooked up to the first object, no objects
// will get finalized yet.
Console.WriteLine();
Console.WriteLine("Setting the object that hooks the event to null and calling garbage collector...");
objectThatHooksEvent = null;
GC.Collect();
Console.WriteLine("Nothing magical?");
// let's try unhooking the event now and calling the gc. we should
// finally be able to get rid of our second object
Console.WriteLine();
Console.WriteLine("Press enter and I'll unhook the events for you and call the garbage collector again.");
Console.ReadLine();
objectWithEvent.UnhookAll();
GC.Collect();
// now that we've ditched the second object, we can safely get rid
// of the first one!
Console.WriteLine("Neat-o, eh? Press enter and I'll set the object with the event to null and call the garbage collector one last time.");
Console.ReadLine();
objectWithEvent = null;
GC.Collect();
Console.WriteLine("And presto! Both are gone.");
}
private static void Example3()
{
// first we allocate some objects. the second object we create
// depends on the first. the second object is going to hook onto
// the event exposed by the first object.
Console.WriteLine("Creating instances...");
var objectWithEvent = new ObjectWithEvent();
var objectThatHooksEvent = new HookWithAnonymousDelegate2(objectWithEvent);
// we'll set the instance to null and call the GC, but since we
// have an event still hooked up to the first object, no objects
// will get finalized yet.
Console.WriteLine();
Console.WriteLine("Setting the object that hooks the event to null and calling garbage collector...");
objectThatHooksEvent = null;
GC.Collect();
Console.WriteLine("Nothing magical?");
// let's try unhooking the event now and calling the gc. we should
// finally be able to get rid of our second object
Console.WriteLine();
Console.WriteLine("Press enter and I'll unhook the events for you and call the garbage collector again.");
Console.ReadLine();
objectWithEvent.UnhookAll();
GC.Collect();
// now that we've ditched the second object, we can safely get rid
// of the first one!
Console.WriteLine("Neat-o, eh? Press enter and I'll set the object with the event to null and call the garbage collector one last time.");
Console.ReadLine();
objectWithEvent = null;
GC.Collect();
Console.WriteLine("And presto! Both are gone.");
}
