Azure IoT Development Cookbook

How to do it...

Let's follow the following steps to use the device twin operation:

1. Store the device metadata:

var patch = new { properties = new { desired = new { deviceConfig = new { configId = Guid.NewGuid().ToString(), DeviceOwner = "yatish", latitude = "17.5122560", longitude = "70.7760470" } }, reported = new { deviceConfig = new { configId = Guid.NewGuid().ToString(), DeviceOwner = "yatish", latitude = "17.5122560", longitude = "70.7760470" } } }, tags = new { location = new { region = "US", plant = "Redmond43" } } }; await registryManager.UpdateTwinAsync(deviceTwin.DeviceId, JsonConvert.SerializeObject(patch), deviceTwin.ETag);

2. Query the device metadata:

 var query = registryManager.CreateQuery("SELECT * FROM devices WHERE deviceId ...