Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
class	Bluetooth	MBS WinFrameworks Plugin	24.3	❌ No	✅ Yes	❌ No	❌ No	Desktop, Console & Web

Enumerates devices dynamically, so that the app receives notifications if devices are added, removed, or changed after the initial enumeration is complete.

An app calls Start to begin the search for devices. During this initial enumeration, the DeviceWatcher raises an Added event for each device that's found, until all devices are found. The DeviceWatcher raises an EnumerationCompleted event when the initial enumeration is complete, and continues to raise events if a device is added, updated, or removed.
The following diagram shows how the DeviceWatcher transitions between the states represented by DeviceWatcherStatus enumeration.

The Start method can only be called when the DeviceWatcher is in the Created, Stopped or Aborted state. The Status property indicates the DeviceWatcher state. When re-starting the watcher, wait for the Stopped event before calling Start.
Stop transitions the DeviceWatcher to the Stopping state and completes immediately. The watcher will transition to the Stopped state once all events that are already in the process of being raised have completed.
Apps may wait for the Stopped event if they need to know when the DeviceWatcher has stopped. Callers must wait for the Stopped event before they can call Start to restart the watcher. Callers may unsubscribe from events if they do not want to receive any additional events after Stop but do not want to wait for the Stopped event.