I've read about disposing objects/IDisposable interface and destructors in C#, but to me they seem to do the same thing?

What is the difference between the two? Why would I use one over the other? In fact, in this example (link below) this code uses both the IDisposable interface and a destructor:

http://msdn.microsoft.com/en-us/library/system.idisposable.aspx

The comment says the destructor is if the finalization code is not used, but how do I decide when to use one over the other?

c# .net
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