public string MountReport()
{
foreach (var item in machineService.List())
{
time = DateTime.Now - item.CreateDate;
if (time.Minutes < limitTime)
{
OnLineMachine++;
}
else if (time.Minutes > limitTime && time.Minutes < limitTimeAlert)
{
AlertMachines++;
}
else
{
OffLineMachines++;
}
}
return($"Machines Online {OnLineMachine} and Alert Machines {AlertMachines} and OffLine Machines {OffLineMachines}");
}