BuildReportTool.AssetList.GetSizeOfSumSelection C# (CSharp) Метод

        double GetSizeOfSumSelection()
        {
            double total = 0;
            foreach (var pair in _selectedForSum)
            {
            if (pair.Value.UsableSize > 0)
            {
                total += pair.Value.UsableSize;
            }
            }
            return total;
        }