![]() ![]() On timer_Tick event we have implement the task which we need to do when user become inactive for particular period of time. In form we have declared and initialize timer. So far we have created MessageFilter class (On keyboard or mouse activity it will reset the timer of form). so first check weather idle task is already running or not. Remember after every five minutes or period you defined above this timerIdle_Tick will be called Same logic for other task or Implement your own. If you want to redirect user to login page, then first check weather login page is already displayed or not Here perform your action by first validating that idle task is not already running. Private void timerIdle_Tick(object sender, EventArgs e) TimerIdle.Tick += new EventHandler(timerIdle_Tick) Here after 5 minutes perform task in timerIdle_Tick TimerIdle.Interval = 50000 // Idle time period. Note to set Interval of timer to your requirement. SYSTEM IDLE TIMER WINDOWS CODEThe theme is to reset the timer in MessageFilter on any Keyboard or Mouse activityī) Put following initializing code after InitializeComponent or on Form_Load. If don't want to use static then you can implement your own logic. Reason for taking this timer as static becasue we need to reset timer in MessageFilter class. In the form where you actually want to implement what to do if user is inactive for particular period, like redirecting to Login page, performing Session / objects cleanup, hiding or locking touchy form etc etc, put following peace of code, If (m.Msg = WM_MOUSEMOVE || m.Msg = WM_KEYDOWN || m.Msg = WM_LBUTTONDOWN || m.Msg = WM_MOUSEWHEEL || m.Msg = WM_RBUTTONDOWN || m.Msg = WM_MBUTTONDOWN) Public bool PreFilterMessage(ref Message m) To make things clearer, click the Performance tab: Report abuse. When the CPU has nothing to do, the System Idle process is near 100. When the CPU is fully loaded, the System Idle process sits at near 0. Here we are only interested in only Keyboard and Mouse activities As Ken Blake already mentiond, the System Idle process indicates the percentage of the time that the CPU is idle. Following are the Windows API hex values. Public class MessageFilter : IMessageFilter The theme behind is the usage of MessageFiler that will be intercepting calls (Keyboard / Mouse activities) and usage of Today I was required to implement detecting the idle time or user inactivity in windows form. ![]()
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