c# - PerformanceCounterType.NumberOfItems32 直前の数

Question

直前の合計増分を数える方法は?

        //Create Counter
        CounterCreationDataCollection counter = new CounterCreationDataCollection();

        CounterCreationData total = new CounterCreationData();
        total.CounterName = "totalOps";
        total.CounterType = PerformanceCounterType.NumberOfItems32;
        counter.Add(total);