获得最后的窗口关闭事件的使用.NET的日期时间 [英] Get the date-time of last windows shutdown event using .NET

问题描述

有没有办法找出当系统是上次关机？

Is there a way to find out when the system was last shutdown?

我知道有一种方法来找出最后的开机时间用在 LastBootUpTime 属性的Win32_OperatingSystem 命名空间中的 WMI

I know there's a way to find out last boot up time using the LastBootUpTime property in Win32_OperatingSystem namespace using WMI.

有什么相似找出上次关机时间？

Is there anything similar to find out last shutdown time?

感谢。

推荐答案

（这里的一切是100％的礼貌<一href="http://stackoverflow.com/questions/1631933/get-the-date-time-of-last-windows-shutdown-event-using-net/1632171#1632171">JDunkerley's前面回答）的

解决的办法是，而是可以用较少的可实现从字节阵列将的DateTime 办法使用 BitConverter 。以下六类线code语句做同样的，并给出正确的的DateTime 从注册表：

The solution is above, but the approach of going from a byte array to DateTime can be achieved with fewer statements using the BitConverter.The following six lines of code do the same and give the correct DateTime from the registry:

public static DateTime GetLastSystemShutdown()
{
    string sKey = @"System\CurrentControlSet\Control\Windows";
    Microsoft.Win32.RegistryKey key = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(sKey);

    string sValueName = "ShutdownTime";
    byte[] val = (byte[]) key.GetValue(sValueName);
    long valueAsLong = BitConverter.ToInt64(val, 0);
    return DateTime.FromFileTime(valueAsLong);
}

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