System time(minute) change event doesn't raise per minute.

I wrote the following code to write the current datetime into a txt file per
minute in .Net CF2.0 version:

SystemState s = new SystemState(SystemProperty.Time);
s.Changed += new ChangeEventHandler(s_Changed);

void s_Changed(object sender, ChangeEventArgs args)
{
FileStream fsMyfile = new FileStream("\Program Files\Sender\1.txt",
FileMode.Append, FileAccess.Write);
StreamWriter swMyfile = new StreamWriter(fsMyfile);
swMyfile.WriteLine("CurrentDateTime:" + DateTime.Now.ToString());
swMyfile.Flush();
swMyfile.Close();
}

I wrote this code according to the sample in WM6 SDK.
But, after few hours, I checked the txt file, it didn't write the system
time per minute.
The Actual Results as follow:
CurrentDateTime:07-6-30 17:37:02
CurrentDateTime:07-6-30 17:38:02
CurrentDateTime:07-6-30 17:39:02
CurrentDateTime:07-6-30 19:03:38
CurrentDateTime:07-6-30 19:04:03
CurrentDateTime:07-6-30 19:05:03
CurrentDateTime:07-6-30 19:10:51
CurrentDateTime:07-6-30 19:11:02
CurrentDateTime:07-6-30 19:12:02
CurrentDateTime:07-6-30 19:13:02

During 07-6-30 17:39:02 to 07-6-30 19:03:38, I didn't use my mobile. So, I
think, maybe it's the problem.

Then I tried the System.Threading.Timer also. It's same problem as above.
When the screen turn off, then the system will not raise the timer tick event
again.

I don't know it's the .Net CF2.0's bug or not.

So, I submit it here.

Could you help me on it?

Thanks a lot!

=============================
btw, What I want to do is to monitor a directory, If got any file, then
process it and cut it to other folder.

It looks like a Service. Right?
I found a lot of documents that talk about how to create Service in VC++,
but, I don't know anything about VC++, I just know C#.

Could you teach me to create a service by C#?

My understanding is that when the device turns itself off (after whatever
the defined timeout is) it is OFF. PERIOD! That is the processor is not
processing any instructions, and so therefore is not running any of your
code. What is it you are tying to accomplish?

Ron W


"Luckcao" <Luckcao RemoveThis @discussions.microsoft.com> wrote in message
news:C338EB32-2F1C-41E5-9017-062B7C12BEBF@microsoft.com...
>I wrote the following code to write the current datetime into a txt file
>per
> minute in .Net CF2.0 version:
>
> SystemState s = new SystemState(SystemProperty.Time);
> s.Changed += new ChangeEventHandler(s_Changed);
>
> void s_Changed(object sender, ChangeEventArgs args)
> {
> FileStream fsMyfile = new FileStream("\Program Files\Sender\1.txt",
> FileMode.Append, FileAccess.Write);
> StreamWriter swMyfile = new StreamWriter(fsMyfile);
> swMyfile.WriteLine("CurrentDateTime:" + DateTime.Now.ToString());
> swMyfile.Flush();
> swMyfile.Close();
> }
>
> I wrote this code according to the sample in WM6 SDK.
> But, after few hours, I checked the txt file, it didn't write the system
> time per minute.
> The Actual Results as follow:
> CurrentDateTime:07-6-30 17:37:02
> CurrentDateTime:07-6-30 17:38:02
> CurrentDateTime:07-6-30 17:39:02
> CurrentDateTime:07-6-30 19:03:38
> CurrentDateTime:07-6-30 19:04:03
> CurrentDateTime:07-6-30 19:05:03
> CurrentDateTime:07-6-30 19:10:51
> CurrentDateTime:07-6-30 19:11:02
> CurrentDateTime:07-6-30 19:12:02
> CurrentDateTime:07-6-30 19:13:02
>
> During 07-6-30 17:39:02 to 07-6-30 19:03:38, I didn't use my mobile. So, I
> think, maybe it's the problem.
>
> Then I tried the System.Threading.Timer also. It's same problem as above.
> When the screen turn off, then the system will not raise the timer tick
> event
> again.
>
> I don't know it's the .Net CF2.0's bug or not.
>
> So, I submit it here.
>
> Could you help me on it?
>
> Thanks a lot!
>
> =============================
> btw, What I want to do is to monitor a directory, If got any file, then
> process it and cut it to other folder.
>
> It looks like a Service. Right?
> I found a lot of documents that talk about how to create Service in VC++,
> but, I don't know anything about VC++, I just know C#.
>
> Could you teach me to create a service by C#?
>