Question

Hi I am working with Windows.Forms.Timer with Web Application . I create Timer.Tick event handler to handle Timer_Tick but I am not successfull. I don’t get any error but I can not get result even. Here is my code

     System.Windows.Forms.Timer StopWatchTimer = new System.Windows.Forms.Timer();
    Stopwatch sw = new Stopwatch();

public void StopwatchStartBtn_Click(object sender, ImageClickEventArgs e)
{
    StopWatchTimer.Enabled = true;
    StopWatchTimer.Interval = 1;
    StopWatchTimer.Start();
    this.StopWatchTimer.Tick += new EventHandler(StopWatchTimer1_Tick);
    sw.Start();
}


protected void StopWatchStopBtn_Click(object sender, ImageClickEventArgs e)
{
    StopWatchTimer.Stop();
    sw.Reset();
    StopWatchLbl.Text = "00:00:00:000";
}

public void StopWatchTimer1_Tick(object sender,EventArgs e)
{
    TimeSpan elapsed = sw.Elapsed;
    StopWatchLbl.Text = string.Format("{0:00}:{1:00}:{2:00}:{3:00}", 
                            Math.Floor(elapsed.TotalHours), 
                            elapsed.Minutes, 
                            elapsed.Seconds, 
                            elapsed.Milliseconds);
}

Answer 1

From the MSDN documentation for Windows Forms Timer (emphasis mine):

Implements a timer that raises an event at user-defined intervals. This timer is optimized for use in Windows Forms applications and must be used in a window.

This timer will not work in a web application. You’ll need to use another class, like System.Timers.Timer. This has it’s own pitfalls, however.