private async void OnTakePhotoClick(object sender, RoutedEventArgs e)
{
    //Take photo or video
    CameraCaptureUI cameraCapture = new CameraCaptureUI();
    StorageFile media = await cameraCapture.CaptureFileAsync(CameraCaptureUIMode.PhotoOrVideo);

    //add todo item to trigger insert operation which returns item.SAS
    var todoItem = new TodoItem() {                     
            ContainerName = "myPics", 
            ResourceName= media.Name,
            Text = "NA", 
    };

    await todoTable.InsertAsync(todoItem);
    items.Add(todoItem);

    //TODO: Upload image direct to blob storage using SAS
}