Finalizers with Dispose() in C#

Question

See the code sample from MSDN: (http://msdn.microsoft.com/en-us/library/b1yfkh5e(v=VS.100).aspx)

// Design pattern for a base class.
public class Base: IDisp         


        

Answer 1

If someone forgets to call Dispose, the finalizer will (eventually) run to do final cleanup. Since finalization hurts performance, ideally no-one will forget to Dispose. The using construct helps a little with that.

Answer 2

There are 2 scenarios:

• Your code calls Dispose (preferred) and the Finalizer is canceled, eliminating the overhead.
• Your code 'leaks' the object and the GC calls the Finalizer.