使用 .net 性能计数器时崩溃

Question

我正在尝试在我的应用程序中使用 .NET 性能计数器。这是代码：

if (!PerformanceCounterCategory.Exists("Processor"))
{
    CounterCreationDataCollection CCDC = new CounterCreationDataCollection();

    // Add the counter.
    CounterCreationData NOI64 = new CounterCreationData();
    NOI64.CounterType = PerformanceCounterType.NumberOfItems64;
    NOI64.CounterName = "%Processor Time";
    CCDC.Add(NOI64);

    // Create the category.
    PerformanceCounterCategory.Create("Processor", "", PerformanceCounterCategoryType.SingleInstance, CCDC);
}
PerformanceCounter PC = new PerformanceCounter("Processor", "%Processor Time", false);
PC.RawValue = 0;

当我执行这段代码时，我在下面提到的PerformanceCounter PC = new PerformanceCounter("Processor", "%Processor Time", false);处崩溃

An unhandled exception of type 'System.InvalidOperationException' occurred in System.dll

Additional information: The requested Performance Counter is not a custom counter, it has to be initialized as ReadOnly.

我也尝试了 using lodctr 命令，但它确实像 The requested Performance Counter is not a custom counter, it has to be initialized as ReadOnly

中提到的那样工作

Answer 1

那么你想达到什么目的？它明确表示，您应该将其初始化为只读。所以，根据 documentation 你需要传递 true 而不是 false 作为第三个参数。

此外，不要将零分配给 RawValue 属性。这是行不通的（因为计数器是只读的）。