Developing modern applications in cloud

In .Net, garbage collector is very good at cleaning up managed resources. Managed resources are object implemented using .Net framework and something that the Garbage collector is aware of. Unmanaged resource is anything that is implemented outside .Net framework and Garbage collector has no information about it. The combination of Destructor and Dispose can be used to release unmanaged resources for e.g open files or database connection. If you are not using any unmanaged resource, there is no need to implement IDisposable. Garbage collector will take care of release the unused objects and freeing up the memory.

In case of a managed object, Destructor is the method which is called when the unused objects are cleared up Garbage collector. Dispose method is called by the client of the object. By default Destructors are automatically created by the compiler where as you need to Implement IDisposable to implement Dispose method.