Error "Method Name expected'

Make sure doubleClickTimer_Tick is a method in your code.

This is a stone-age syntax. Use:

doubleClickTimer.Tick += (sender, eventArgs) => {
   // whatever you want
}

Even if you are using C# v.2 where lambda syntax was not available, anonymous methods were already available:

doubleClickTimer.Tick += delegate(object sender, System.EventArgs eventArgs) {
   // same thing
}

As to the versions of C# prior to v.2, I think I can safely assume that they should not be used anymore.

Now, do you know there are two more timers, not as bad as the class System.Windows.Forms, shamelessly inaccurate, designed only for ease of use? Two other, much better classes are:

System.Threading.Timer: http://msdn.microsoft.com/en-us/library/system.threading.timer.aspx[^],
System.Timers.Timer: http://msdn.microsoft.com/en-us/library/system.timers.timer.aspx[^].

Finally, I have no idea why are you using a timer, but you should be warned that the timers are often misused. In most situations, the better, more reliable and easier to develop and maintain solution is using threads instead.

—SA