Azure IoT Hub: "onChangeStatus" trigger with C# solution

Question

Once I got a devices connected to my hub, I would like to listen its own status changes and catch them.

Moreover the classic pattern (creating an async task, given the previous device obtained through query, repeat and see if the status has been changed then get the event's datetime) is there any kind of built-in method which could help me?

Answer 1

The following docs can help you for your eventing:

• Understand and use device twins in IoT Hub
• Non-telemetry events
• Azure EventHubTrigger function

The above documents described how to capture and route the device twin change events to the EventHubTrigger function.

Answer 2

The integration of IoT Hub with Azure Event Grid sounds exactly like what you are looking for: https://learn.microsoft.com/en-us/azure/iot-hub/iot-hub-event-grid

There is also a sample/tutorial using Logic Apps: https://learn.microsoft.com/en-us/azure/event-grid/publish-iot-hub-events-to-logic-apps