c# - 用于确定其健康状况的笔记本电脑/平板电脑 BatteryCycleCount

Question

请帮我获取笔记本电脑/平板电脑的“BatteryCycleCount”值。根据这个属性，我们将确定更换电池。以下是我在谷歌搜索中找到的一些 API：

[DllImport("setupapi.dll", SetLastError = true)]
protected static extern IntPtr SetupDiGetClassDevs(ref Guid gClass, [MarshalAs(UnmanagedType.LPStr)] string strEnumerator, IntPtr hParent, uint nFlags);

[DllImport("setupapi.dll", SetLastError = true)]
protected static extern bool SetupDiEnumDeviceInterfaces(IntPtr lpDeviceInfoSet, uint nDeviceInfoData, ref Guid gClass, uint nIndex, ref SP_DEVICE_INTERFACE_DATA oInterfaceData);

[DllImport("setupapi.dll", SetLastError = true)]
protected static extern bool SetupDiGetDeviceInterfaceDetail(IntPtr lpDeviceInfoSet, ref SP_DEVICE_INTERFACE_DATA oInterfaceData, ref SP_DEVICE_INTERFACE_DETAIL_DATA oDetailData, uint nDeviceInterfaceDetailDataSize, ref uint nRequiredSize, IntPtr lpDeviceInfoData);

[DllImport("kernel32.dll", SetLastError = true)]
protected static extern IntPtr CreateFile([MarshalAs(UnmanagedType.LPStr)] string strName, uint nAccess, uint nShareMode, IntPtr lpSecurity, uint nCreationFlags, uint nAttributes, IntPtr lpTemplate);

[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool DeviceIoControl([In] SafeHandle hDevice, [In] int dwIoControlCode, [In] IntPtr lpInBuffer, [In] int nInBufferSize, [Out] IntPtr lpOutBuffer, [In] int nOutBufferSize, out int lpBytesReturned, [In] IntPtr lpOverlapped);

Answer 1

您可以请求“电池状态”类别中的性能计数器，而不是直接使用 Windows API。

编辑 ：

“电池状态”类别中的计数器是多实例：每个电池一个。在我的笔记本电脑上，我可以编写以下 C# 代码：

var counter = new PerformanceCounter("BatteryStatus", "RemainingCapacity", "ACPI\PNP0C0A\0_0", true);
var remainingCapacity = counter.NextValue();

您可以使用性能监视器（“perfmon”命令）查看“电池状态”类别中的所有可用计数器。