Scheduled VB.NEt program

[LittleRob]

I'm having problems using Windows Task scheduler (or AT or SCHTASKS) to
run a VB.NET program unattended.

I'm able to reduce it to some really simple code that still fails

My program has a Sub Main something like

Sub Main()

MainForm.showdi alog

End Sub

In MainForm the New() does execute, but code in the MainFormLoad event
doesn't. I then get a System.InvalidO perationExcepti on in the Eventlog
for that machine.

Why is this so hard, when VB6 can do this no problem?

Thanks

Rob

[Andrew Morton]

Could you write a separate program for the user interface? You could have
the UI program start the processing program.

Andrew

[LittleRob]

Armin Zingler wrote:

>
I remember an awesome basic discussion about that...

Some say: "Why not do something doesn't make sense but that doesn' hurt?"
I say: "Why do something that doesn't has to be done, even if it doesn't
hurt?"

Armin

Well Imagine you and I are in a room together and you are counting out
loud. If I leave the room do you *have to* stop talking out loud (but
continue counting) just because I'm not there?

At the end of the day I *have* fixed my code so that it runs without any
UI. It just seems a shame that I need to do this on a program that may,
or may not have somebody watching it.

If I'd set out to write a service then clearly all discussion of "what's
the point..." would have been valid.

Environment.Use rInteractive

Didn't know that one. I'll try it out.

Thanks for the help. I have to say developing this stuff is a pain
because I have to keep scheduling a task, logging out, and twiddling my
fingers. Its *really* boring !

Rob

[Bryan]

I have been reading you alls post waiting for a work around but all I see is "why show the ui?", so here is my answer. I have the exact problem and I have to have a ui when no one sees it because I get a bunch of data from the db and manipulate it and then using that draw a graph on the winform. Then converting the form(frame) to a bitmap and saving it on the hard drive. Then I send out a email with the .bmp attached. This works perfect while I am logged in but when I am not it does not draw so it does not save so it does not send it as an attachment. So now that I have answered why you would need a winform when no one can see it, can anyone provide me with a work around, I would appreciate it.

[Stephany Young]

Draw your graph directly to a bitmap.
"Bryan" wrote in message news:u6******** ******@TK2MSFTN GP04.phx.gbl...

>I have been reading you alls post waiting for a work around but all I see
is "why show the ui?", so here is my answer. I have the exact problem and
I have to have a ui when no one sees it because I get a bunch of data from
the db and manipulate it and then using that draw a graph on the winform.
Then converting the form(frame) to a bitmap and saving it on the hard
drive. Then I send out a email with the .bmp attached. This works perfect
while I am logged in but when I am not it does not draw so it does not save
so it does not send it as an attachment. So now that I have answered why
you would need a winform when no one can see it, can anyone provide me with
a work around, I would appreciate it.

[Armin Zingler]

I thought I've sent this already earlier...

"LittleRob" <gr************ *@greymouse.co. ukschrieb

Armin Zingler wrote:

I remember an awesome basic discussion about that...

Some say: "Why not do something doesn't make sense but that doesn'
hurt?" I say: "Why do something that doesn't has to be done, even
if it doesn't hurt?"

Armin

Well Imagine you and I are in a room together and you are counting
out loud. If I leave the room do you *have to* stop talking out loud
(but continue counting) just because I'm not there?

Yes, because I mustn't talk if you're not there. These are the rules for the
room that you are currently ignoring. Look at the docs
(Environment.Us erInteractive property):

"If this property is false, do not display modal dialogs or message boxes
because there is no graphical user interface for the user to interact with."
The plattform SDK clearly states:

"The interactive window station, Winsta0, is the only window station that
can display a user interface or receive user input. It is assigned to the
logon session of the interactive user, and contains the keyboard, mouse, and
display device."

http://msdn2.microsoft.com/en-us/library/ms687096.aspx

I must admit I'm not a specialist in this, so you'd have to read it up on
your own. Maybe the link is a starting point.

At the end of the day I *have* fixed my code so that it runs without
any UI. It just seems a shame that I need to do this on a program
that may, or may not have somebody watching it.

If I'd set out to write a service then clearly all discussion of
"what's the point..." would have been valid.

Environment.Use rInteractive

Didn't know that one. I'll try it out.

Thanks for the help. I have to say developing this stuff is a pain
because I have to keep scheduling a task, logging out, and twiddling
my fingers. Its *really* boring !

I don't understand. What's the problem? You only have to not show the Form
if no user is logged in.
Armin

[Bryan]

>Draw your graph directly to a

>bitmap.

How do I draw directly to a bitmap.
I am using GDI+ and to my understanding it is used to draw on
the form, which then can be saved
to a bitmap. If this is not true,
how do you write directly to a
bitmap. I am currently doing it
in the OnPaint() but since it runs
when I am not logged it in never runs the OnPaint(). Here is my
code sample:
protected override void OnPaint(PaintEv entArgs pe)
{
Graphics graph = pe.Graphics;
Bitmap bmp =
new Bitmap(this.Siz e.Width,
this.Size.Heigh t);
graph = Graphics.FromIm age(bmp);
frameView.Image = bmp;
frameView.Refre sh();
bmp.Save(strDir );
}

Any help would be appreciated!!!

[Armin Zingler]

<Bryanschrieb

Draw your graph directly to a
bitmap.

How do I draw directly to a bitmap.

Create a graphics object by calling Graphics.FromIm age.

see also:
http://msdn2.microsoft.com/en-us/lib...07(VS.90).aspx

Don't forget to dispose the Graphics object (like in the example).

Armin

[Bryan]

>>Create a graphics object by calling >>Graphics.From Image.

>>see also:
http://msdn2.microsoft.com/en-us/lib...07(VS.90).aspx

>>Don't forget to dispose the >>Graphics object (like in the example).

Thank you...