public void Add(Cost cost, double amount) { var costs = Costs.SingleOrDefault(c => c.Name == cost.Name); if (costs == null) { Costs.Add(cost); } CostsList.Add(cost, amount); Save(Costs); Save(new List <CostsList>() { CostsList }); }
public void Add(Costs cost, double price) { var costs = Costs.SingleOrDefault(c => c.Name == cost.Name); if (costs == null) { Costs.Add(cost); Cost.Add(cost, price); Save(); } else { Cost.Add(costs, price); Save(); } }