public void OrderPart(PartType part, int count)
{
var order = new Order()
{
PartTypeId = part.Id,
PartCount = count,
PlacedDate = DateTime.Now
};
order.Part = context.Parts.Single(p => p.Id == order.PartTypeId);
order.Supplier = context.Suppliers.First(s => s.PartTypeId == part.Id);
order.SupplierId = order.Supplier.Id;
context.CreateOrder(order);
}
