Safely disposing of unmanaged code
When working with unmanaged resources, you must explicitly dispose of them yourself to free up resources. If you do not, then you may end up with exceptions being raised or, worse, your application completely crashing. You must make sure that your applications don't continue running and supplying wrong data when exceptions are encountered. Should exceptions be encountered where the data would become invalid if the application were to continue, then it is better to exit the program. You must also make sure that if your application encounters a catastrophic exception that it is unable to recover from, either a message is displayed or some kind of logging takes place before it shuts down.
In C#, there are two ways to dispose of unmanaged resources: using the disposable pattern and using finalizers. We will discuss both methods in this section via code examples.