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What Does Dispose Mean? In the context of C#, dispose is an object method invoked to execute code required for memory cleanup and release and reset unmanaged resources, such as file handles and database connections.
The main difference between dispose() and finalize() is that the method dispose() has to be explicitly invoked by the user whereas, the method finalize() is invoked by the garbage collector, just before the object is destroyed.
For implementing the IDisposable design pattern, the class which deals with unmanaged objects directly or indirectly should implement the IDisposable interface. And implement the method Dispose declared inside of the IDisposable interface. We do not directly deal with unmanaged objects.
The Dispose(Boolean) method overload is the preferred method to override. If you derive a class from Controller and the derived class uses unmanaged memory, managed operating-system resources (such as files), or COM objects, you should implement Dispose to clean up these resources.
So I was just reading about the RAII pattern for non garbage collected languages, and this section caught my eye:
This limitation is typically encountered whenever developing custom classes. Custom classes in C# and Java have to explicitly implement the dispose method in order to be dispose-compatible for the client code. The dispose method has to contain explicit closing of all child resources belonging to the class. This limitation does not exist in C++ with RAII, where the destructor of custom classes automatically destructs all child resources recursively without requiring any explicit code.
Why is it that C++ can correctly track these resources that are allocated in the RAII pattern, but we don't get this lovely Stack Unwinding with the C# using construct?
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