Hi

I have a problem with a winforms app. I have a timer (autoReset) which on elapsed updates a lable on my form. When I close the form I get an error stating "Cannot access a disposed object"

Here is the method I call on the timer event:

private void upDateTimeData()
{
if (!(this.Disposing))
{
try
{
if (this.InvokeRequired)
{
{
this.Invoke((MethodInvoker)delegate() { this.upDateTimeData(); });
}
}
else
{
label_TCGDate.Text = masterClock.TCGDate.ToShortDateString();
label_TCGTimecode.Text = masterClock.TCG.ToString();
}
}
catch (Exception e)
{
Console.WriteLine("Form Error: " + e.Message);
//Form Closing.
}

}
}

I have tried unregestering the timer event in the form closing event, but that did not help.

Does anyone know of the best way of dealing with cross thread delegation and form closing?

Thanks for your time Guy's.

John.

Hi John,

My suggestion is to stop the timer when the form is closed. Handle the FormClosed event of the Form and call the Stop method on the timer.

Please try my suggestion and let me know the result.

Sincerely,
Linda Liu

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Hi Linda,

Thanks for your reply.

Your suggestion was the very first thing I tried. Unfortunately that did not work for me.

I think it may be due to the rate of the timer frame rate 1/25 second,and the formMessage pumps (if thats the correct term). I think I need a way of flushing all queues after detaching the event, and then unload the form. Just not really sure how to do that.

best regards

John