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Can Visual Studio 2008 be configured to give me a warning when I forget to dispose an object that implements IDisposable?
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IDisposable is usually used when a class has some expensive or unmanaged resources allocated which need to be released after their usage. Not disposing an object can lead to memory leaks.
If the class inherits from a class that implements IDisposable it must call the Dispose(), or Dispose(bool) method of the base class from within its own implementation of Dispose() or Dispose(bool), respectively. This ensures that all resources from the base class are properly released.
By default, the garbage collector automatically calls an object's finalizer before reclaiming its memory. However, if the Dispose method has been called, it is typically unnecessary for the garbage collector to call the disposed object's finalizer.
Rule of thumb: if a class implements IDisposable you should always call the Dispose method as soon as you have finished using this resource. Even better wrap it in a using statement to ensure that the Dispose method will be called even if an exception is thrown: using (var reader = conn. ExecuteReader()) { ... }
Visual Studio, by itself does not have this feature, but with CodeRush you can have design time warnings and refactorings to insert using blocks where needed.
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