在 C# 中检测系统从睡眠中唤醒的事件
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Event to detect System wake up from sleep in C#
提问by Pankaj
I need to detect the system power state mode. To be precise, I need an event which fires up when windows 7 wakes up from sleep. I am already using:
我需要检测系统电源状态模式。准确地说，我需要一个在 Windows 7 从睡眠中醒来时触发的事件。我已经在使用：
SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged;
But the problem with this event is that it is raised up four times: possibly when computer goes into sleep mode and after computer wakes up. I want an event which is raised at computer wake up only. Is there any event for this?
但是这个事件的问题是它被引发了四次：可能是在计算机进入睡眠模式和计算机唤醒之后。我想要一个仅在计算机唤醒时引发的事件。有什么活动吗？
采纳答案by Marcus
SystemEvents.PowerModeChanged += OnPowerChange;
private void OnPowerChange(object s, PowerModeChangedEventArgs e)
{
switch ( e.Mode )
{
case PowerModes.Resume:
break;
case PowerModes.Suspend:
break;
}
}
You should probably read this: http://msdn.microsoft.com/en-us/library/microsoft.win32.systemevents.powermodechanged.aspx
您可能应该阅读以下内容：http: //msdn.microsoft.com/en-us/library/microsoft.win32.systemevents.powermodechanged.aspx
回答by Moo-Juice
You need to inspect the Modeproperty of the PowerModeChangedEventArgsthat is passed to the event.
您需要检查传递给事件的Mode属性PowerModeChangedEventArgs。
From MSDN:
来自 MSDN：
ResumeThe operating system is about to resume from a suspended state.
StatusChangeA power mode status notification event has been raised by the operating system. This might indicate a weak or charging battery, a transition between AC power and battery, or another change in the status of the system power supply.
SuspendThe operating system is about to be suspended.
Resume操作系统即将从挂起状态恢复。
StatusChange操作系统已引发电源模式状态通知事件。这可能表示电池电量不足或正在充电、交流电源和电池之间的转换或系统电源状态的其他变化。
Suspend操作系统即将暂停。
回答by habib
SystemEvents.PowerModeChanged += OnPowerModeChange;
private void OnPoweModerChange(object s, PowerModeChangedEventArgs e)
{
if(e.Mode==PowerModes.Suspend)
{
//Apply your operation
}
}
Use this code to do your job
使用此代码来完成您的工作
