When the timer ticks, they compare the current system time to what they stored in the form variable. So, if they want a clock down to the second, they have the timer interval at 100 or 200. One thing that people do when they want to have a clock, counter, or something like that on a form is they store the system time (date.Now) in a form level variable, then have a timer that ticks faster than the resolution they want. So, for periodic events, a Timer, for precise timing, the Stopwatch. You can't press buttons as accurately as the Stopwatch can time, as it will be down to the millisecond, or beyond. That's a very nice tool for timing things. So, the timer is pretty good for periodic events, so long as you don't care about EXACTLY when that event occurs.Ģ) The Stopwatch is VERY accurate and quite precise. If every tick is off by 50 ms in the same direction, then your timing will be drifting pretty quickly. If the UI is not busy, the timer tick events will be occurring roughly as often as you say, down to an interval of around 50 ms, or perhaps a bit smaller. If the UI is busy doing stuff, timer tick events may not be raised at all. NET in Five Minutes Īs far as I known, this is the best sample on the issue and written by Base Class Library team.A couple points to consider if you are timing things:ġ) The Timer isn't particularly precise. Please read this thread, it has a couple of parts, it will give you great insight as to why the problem is occurring. NET Framework Class LibraryĪctually this kind of problem is common, you can also take a look at this thread that provides you the suggestions: You can take a look at the article below:Ĭomparing the Timer Classes in the. Please try to use instead of System.Timers. What should I do to fire something in every desired interval?Īccording to your question on Timer control in Windows Service application, I would like to provide you the suggestions as follows:ġ. But, my service doesn't do anything after 60 seconds. And when I start or stop my service, related eventlog entry is being inserted to the eventlog. Here is my problem: I am able to install my service. Private Sub Timer1_Tick( ByVal sender As Object, ByVal e As System.EventArgs)ĭim conn As New SqlClient.SqlConnection( "my connection string." )ĭ( "some text here" + Now())ĭ( "some text here " + Now() + " " + ex.Message) Protected Overrides Sub OnStart( ByVal args() As String )ĭ( "some text here " + Now())ĪddHandler Timer1.Tick, AddressOf Timer1_Tickĭ( "some text here " + ex.Message + " " + Now())ĭ( "some text here " ) I have used Timer Tick event to fire things to do. I have tried to write a Windows service in VB.NET 2005 which will do its work in every 60 seconds.
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