We will create a device simulator to upload one sample batch telemetry data file, but before this, we need to first configure the IoT Hub. So, let's start with the steps as follows:

1. To configure IoT Hub, we need to log into the Azure portal.
2. Select IoT Hub service and navigate to the message section.
3. Select the File upload option; it will open a new blade in the Azure portal.

4. Select the storage account and the container for your file ingestion:

5. Now, let's initiate the file upload from a device simulator:

using (var telemetryData = new FileStream(telemetryDataFile, FileMode.Open))
{
 await deviceClient.UploadToBlobAsync(telemetryDataFile, telemetryData);
}

6. The IoT Hub will receive the file upload notification and we will process that using the following code:

var notificationReceiver = serviceClient.GetFileNotificationReceiver();
while (true)
{
 var fileUploadNotification = await notificationReceiver.ReceiveAsync();
 if (fileUploadNotification == null) continue;

 var downoadFile = fileUploadNotification.BlobName;
 // Download the File uploaded on Blob storage
 // process the File data
 // ......
 // ......

 await notificationReceiver.CompleteAsync(fileUploadNotification);
}