Subscribe to the Inserted and Removed events to be notified when a USB drive is plugged in or unplugged, or when a USB device is connected or disconnected. Usb.Events is a .NET Standard 2.0 library and uses WMI on Windows, libudev on Linux and IOKit on macOS.
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Use Observer Pattern (IObservable<T>) in place of C# Events (EventHandler<TEventArgs>) #41
The Observer Pattern allows for multiple subscribers to a single event, and allows for cleaner separation between application layers.
Events are more concrete but tightly-coupled implementations of the Observer Pattern.