/*
* Adds a new "shipment" to the database for the given day, item id, and stock quantity
*/
private void addAvailability(ICatalogView view, AvailabilityEventArgs e)
{
CatalogItemsStock shipment = new CatalogItemsStock();
shipment.CatalogItemId = e.itemId;
shipment.AvailableStock = e.itemStock;
shipment.Date = e.shipDate;
_service.CreateAvailableStock(shipment);
_view.NotifyAvailabilityUpdated();
}