Hi Andy,I'm not sure how you are initialising your Time variable, so I've tried what
is probably a completely different approach. See below for the contents of the .cs file. I found the whole thing to be very sensitive and wasn't able to identify all the troubles. I ended up synchronising the timer to the system time which seems to make the CompareTo function much better behaved. I just have a form with a date time picker showing the time, and a timer. ---code starts--- using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Runtime.InteropServices; namespace Andy_B { public partial class Form1 : Form { [DllImport ("kernel32.dll")] public static extern bool Beep (uint dwFreq, uint dwDuration); DateTime dtTarget; public Form1 () { InitializeComponent (); // synchronise timer with system time timer1.Interval = 1; while (DateTime.Now.Millisecond > 0) // do nothing ; // set initial target time dtTarget = DateTime.Now.AddSeconds (10); // switch timer interval to seconds - 1000 causes trouble timer1.Interval = 990; } private void dateTimePicker1_MouseDown (object sender, MouseEventArgs e) { // select a new target time // change the time using the arrow keys // then click on the date time picker dtTarget = dateTimePicker1.Value; } private void timer1_Tick (object sender, EventArgs e) { // test system time against target time int i = DateTime.Now.CompareTo (dtTarget); if(i == 0) MessageBox.Show ("This is the second!"); else { // write the system time into the window title bar Text = DateTime.Now.TimeOfDay.ToString (); // uncomment next line for beeps // Beep (440, 10); } } } } ---code ends--- hth Martin----- Original Message ----- From: "Andy B" <a_borka@xxxxxxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx> Sent: Friday, October 26, 2007 6:03 PM Subject: RE: DateTime.Value.CompareTo in c# Hi... I set the DateTimePicker to 10/26/2007 3:20:00pm. My system time is set to 10/26/2007 12:58:25pm as of the test. It still shows the box every tick. The goal is to get the box to show only once when the system time reaches the DateTimePicker value. Don't know what is going wrong..... ---snip--- __________View the list's information and change your settings at //www.freelists.org/list/programmingblind