我在 C# 中提取电池信息时遇到问题。寻找:
- 设计能力
- 充满电容量
- 当前容量
- 警戒级别
- 批判性偏见
- 收费率
其余信息提取自SystemInformation.PowerStatus
和
SELECT from CIM_Battery
类。
不再支持此类的许多属性的问题。
我应该在哪里查找其余信息?
我在 C# 中提取电池信息时遇到问题。寻找:
其余信息提取自SystemInformation.PowerStatus
和
SELECT from CIM_Battery
类。
不再支持此类的许多属性的问题。
我应该在哪里查找其余信息?
对于手持设备,您可以使用该类。至少我用了很多年。
using System.Runtime.InteropServices;
using System;
namespace uti {
public class Power {
[DllImport("coredll.dll", EntryPoint = "KernelIoControl", SetLastError = true)]
private static extern bool KernelIoControl(int dwIoControlCode, System.IntPtr lpInBuf, int nInBufSize, byte[] lpOutBuf, int nOutBufSize, ref int lpBytesReturned);
private const int FILE_ANY_ACCESS = 0;
private const int FILE_DEVICE_HAL = 257;
private const int METHOD_BUFFERED = 0;
private const int IOCTL_HAL_REBOOT = (FILE_DEVICE_HAL << 16) | (FILE_ANY_ACCESS << 14) | (15 << 2) | METHOD_BUFFERED;
public static bool DeviceReset() {
int cb = 0;
return KernelIoControl(IOCTL_HAL_REBOOT, System.IntPtr.Zero, 0, null, 0, ref cb);
}
private struct SYSTEM_POWER_STATUS_EX {
public byte ACLineStatus;
public byte BatteryFlag;
public byte BatteryLifePercent;
public byte Reserved1;
public uint BatteryLifeTime;
public uint BatteryFullLifeTime;
public byte Reserved2;
public byte BackupBatteryFlag;
public byte BackupBatteryLifePercent;
public byte Reserved3;
public uint BackupBatteryLifeTime;
public uint BackupBatteryFullLifeTime;
}
[DllImport("coredll.dll")]
extern static private bool GetSystemPowerStatusEx(ref SYSTEM_POWER_STATUS_EX sps);
public enum enACLineStatus {
Offline = 0,
Online = 1,
Backuppower = 2,
Unknownstatus = 255
}
[FlagsAttribute]
public enum enBatteryFlag {
High = 1,
Low = 2,
Critical = 4,
Charging = 8,
Nosystembattery = 128,
Unknownstatus = 255
}
static enACLineStatus _ACLineStatus = 0;
public static enACLineStatus ACLineStatus {
get {
return _ACLineStatus;
}
}
static enBatteryFlag _BatteryFlag = 0;
public static enBatteryFlag BatteryFlag {
get {
return _BatteryFlag;
}
}
static byte _BatteryLifePercent = 0;
public static byte BatteryLifePercent {
get {
return _BatteryLifePercent;
}
}
static byte _Reserved1 = 0;
public static byte Reserved1 {
get {
return _Reserved1;
}
}
static uint _BatteryLifeTime = 0;
public static uint BatteryLifeTime {
get {
return _BatteryLifeTime;
}
}
static uint _BatteryFullLifeTime = 0;
public static uint BatteryFullLifeTime {
get {
return _BatteryFullLifeTime;
}
}
static byte _Reserved2 = 0;
public static byte Reserved2 {
get {
return _Reserved2;
}
}
static enBatteryFlag _BackupBatteryFlag = 0;
public static enBatteryFlag BackupBatteryFlag {
get {
return _BackupBatteryFlag;
}
}
static byte _BackupBatteryLifePercent = 0;
public static byte BackupBatteryLifePercent {
get {
return _BackupBatteryLifePercent;
}
}
static byte _Reserved3 = 0;
public static byte Reserved3 {
get {
return _Reserved3;
}
}
static uint _BackupBatteryLifeTime = 0;
public static uint BackupBatteryLifeTime {
get {
return _BackupBatteryLifeTime;
}
}
static uint _BackupBatteryFullLifeTime = 0;
public static uint BackupBatteryFullLifeTime {
get {
return _BackupBatteryFullLifeTime;
}
}
public static void Refresh() {
SYSTEM_POWER_STATUS_EX sps = new SYSTEM_POWER_STATUS_EX();
bool bRet = GetSystemPowerStatusEx(ref sps);
if (!bRet)
return;
_ACLineStatus =
(enACLineStatus)
sps.ACLineStatus;
_BatteryFlag =
(enBatteryFlag)
sps.BatteryFlag;
_BatteryLifePercent =
sps.BatteryLifePercent;
_Reserved1 =
sps.Reserved1;
_BatteryLifeTime =
sps.BatteryLifeTime;
_BatteryFullLifeTime =
sps.BatteryFullLifeTime;
_Reserved2 =
sps.Reserved2;
_BackupBatteryFlag =
(enBatteryFlag)
sps.BackupBatteryFlag;
_BackupBatteryLifePercent =
sps.BackupBatteryLifePercent;
_Reserved3 =
sps.Reserved3;
_BackupBatteryLifeTime =
sps.BackupBatteryLifeTime;
_BackupBatteryFullLifeTime =
sps.BackupBatteryFullLifeTime;
}
[DllImport("coredll.dll", SetLastError = true)]
static extern int SetSystemPowerState(string psState, int StateFlags, int Options);
const int POWER_STATE_ON = 0x00010000;
const int POWER_STATE_OFF = 0x00020000;
const int POWER_STATE_SUSPEND = 0x00200000;
const int POWER_FORCE = 4096;
const int POWER_STATE_RESET = 0x00800000;
}
}