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Brandon Lewis
NA
527
125.7k
Timer Not Working in Derived Class.
Dec 31 2007 10:07 PM
I have a little issue with a timer not working here, which is quite the bother! lol. Its got be baffled, as there are no compiler errors,
no crashes, and no logic errors I can see. It just simply doesnt trigger the timer tick event handler for the derived ReadStatus class. Any ideas?
I tried to make it as simple as possible (in the real application its a much larger amount of code!) so itd be easy to read. Check it out and
see if you can come up with anything!
public class
SystemStatus
{
protected
Timer
warningTimer =
new
Timer
()
public
SystemStatus()
{
warningTimer.Interval = 500;
warningTimer.Tick +=
new
EventHandler
(warningTimer_Tick);
}
public virtual void
SetLevel(
int
level)
{
i
f
(level == 1 || level == 2)
{
i
f
(!warningTimer.Enabled)
{
warningTimer.Enabled =
true
;
warningTimer.Start();
}
}
else
{
if
(warningTimer.Enabled)
{
warningTimer.Stop();
warningTimer.Enabled =
false
;
}
//Perform some irrelevant updating stuff
}
}
protected virtual void
warningTimer_Tick(
object
sender,
EventArgs
e)
{
//Do some irrelevant stuff
}
}
public class
ReadStatus
:
SystemStatus
{
public
ReadStatus() :
base
()
{
}
public override void
SetLevel(
int
level)
{
if
(level == 1)
{
i
f
(!warningTimer.Enabled)
{
warningTimer.Enabled =
true
;
warningTimer.Start();
}
}
else
{
if
(warningTimer.Enabled)
{
warningTimer.Stop();
warningTimer.Enabled =
false
;
}
//Do some class specific updating here.
}
}
protected override void
warningTimer_Tick(
object
sender,
EventArgs
e)
{
//Do some different stuff specific to this class
}
}
For some reason, when I start the timer in an instance of the ReadStatus class, the warningTimer_Tick event handler never gets triggered even though
if I set up break points, I can clearly see that the timer is being started. Is this some sort of an inheritance glitch??? Thanks!
Reply
Answers (
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