TargetInvocationException
   於 System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   於 System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   於 System.Delegate.DynamicInvokeImpl(Object[] args)
   於 Microsoft.Win32.SystemEvents.SystemEventInvokeInfo.InvokeCallback(Object arg)
   於 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   於 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

NullReferenceException
並未將物件參考設定為物件的執行個體。
   於 Quicker.Domain.Services.SystemEventsWatcher.uEhK1b9k6i1(Object  , SessionSwitchEventArgs  )