public LocationForm(ILocationRequester caller)
        {
            InitializeComponent();
            callingForm = caller;

            PopulateVenueComboBox();
        }
        public CoursesController(ICourseDbContext courseDbContext, ILogger <CoursesController> logger, IConfiguration configuration, ILocationRequester locationRequester)
        {
            _context = courseDbContext;
            _logger  = logger;

            _locationRequester = locationRequester;
            _configuration     = configuration;
        }