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Simon Stevens wrote:
A windows service shouldn't run GUI components. A windows service should never do anything in the GUI.
Why do you want to run your GUI app when your service starts?
Simon
My application does the work of sensing the temperature. So I want to start it as soon as the machine starts even before the user logs in. So, I am implementing the application as a windows service
Can you at least hint me as to how I can implement, say for example an application without GUI, as a windows service ?
Believe me, I have seen GUI based application implemented as a Windows service......but don't know the settings (if any) that need to be done
Regards......
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Windows services should not have GUIs. XP does not allow it by default, and Vista blocks it totally. I've never seen a GUI app running as a service, and I would suspect what your thinking is a service actually isn't.
What you should do is this.
Write a windows service that monitors the temperature. Then write a separate GUI app that communicates with the service to display the information to the user, and allow them to change any settings you want.
To write the service, you just follow the tutorials. You have to implement the various OnStart(), OnStop(), OnSuspend() methods. Your OnStart() method should create any required objects and begin taking the temperature readings. For example, it could create a Timer that triggers a temperature reading every second maybe. In the OnStop() method you need to stop your timer and dispose of anything that needs clearing up.
You then write a separate GUI app that the user can run from the start menu. This communicates with the service (You can use .net remoting, or WCF, or whatever you fancy) to retrieve the temperate from the running service and display it to the user. If you need to GUI app to run as soon as windows starts you can put a link in the startup folder, or add a registry key in the places I've already mentioned.
This way you have a service doing the temperature logging, so can be logging from as soon as windows is on, before the user logs on. And you have a GUI app to display the info to the user that they control and isn't running as a service.
Simon
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Hey Simon,
This seems to be a good solution. However, due to some time constraints, I am not too sure whether I'll be able to follow the same.
Can you give me an idea whether it is possible to run executable file (of the application) from the OnStart() method......may be using Process.Start() or some other way you think would be better ?
And if yes, how?
Regards..
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queries365 wrote: This seems to be a good solution
It's better than a good solution. It's the right solution.
What you want to do is a bad idea. Firstly, as both me and Dave have explained, you should not be doing GUI stuff from a service. At all, and that includes calling other .exe files to display a GUI.
I strongly recommend that you take the time to do it properly now. Time spent up front doing things properly nearly always saves time in the future fixing all the problems. What you're basically saying is that you can't be bothered to do it properly, so you just want to hack out a bad version now.
I could be an arse and tell you it's not possible.
It is though.
But I don't recommend it.
In the right click on the service, and click properties, on the "Log on" tab, set the "log on as" to use the "local system account", and tick the "allow service to interact with desktop" check box. Now you can display a GUI to the user. So yes, just use Process.Start to call your exe and break all the good UI design guidelines I can think of.
I really recommend you do it properly though.
This only works on XP. Vista redirects services to a alternative secure desktop which the user doesn't see.
Simon
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You should not be putting any kind of user interface in a service. You should be creating two seperate applications. One would be the service that does all of your work, and the other would be the user interface portion that, obviously, exposes the user interface and talks to the service over some communication method.
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Dave Kreskowiak wrote: You should not be putting any kind of user interface in a service. You should be creating two seperate applications. One would be the service that does all of your work, and the other would be the user interface portion that, obviously, exposes the user interface and talks to the service over some communication method.
Hey Dave,
Thank you so much for a quick reply.
I am not putting any UI in the service.
What I have done until now is that I have created a simple Windows Service with not much coding done in it by me. I have another Windows Application in place.
What I need to know is the way to launch that application when my service starts.
What is the way to make them communicate so that application gets launched when service starts
Also let me know if any specific settings need to be done
Awaiting your reply
Thank you so much
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queries365 wrote: What I need to know is the way to launch that application when my service starts.
Since the service starts before a user can even log in, you DON'T do this. That application you want to start should be started either out the Run key in the Registry, or from either All Users\StartUp or the individual Startup folder.
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Dave Kreskowiak wrote: queries365 wrote:
What I need to know is the way to launch that application when my service starts.
Since the service starts before a user can even log in, you DON'T do this. That application you want to start should be started either out the Run key in the Registry, or from either All Users\StartUp or the individual Startup folder.
By saying "the way to launch", I mean while writing the service, what is the coding that I need to do......may be regarding registry or startup folder as you suggested or something else.
Basically, I have a Windows Application which I need to implement as a Windows Service. I hope this will help you in understanding my problem better.
Thank you yet again.
Awaiting your reply
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Services do not expose a user interface - it's as simple as that.
queries365 wrote: I mean while writing the service, what is the coding that I need to do
To do what?
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Dave Kreskowiak wrote: Services do not expose a user interface - it's as simple as that.
queries365 wrote:
I mean while writing the service, what is the coding that I need to do
To do what?
To implement application as a service......
I have seen GUI-based application working as Windows service......Don't know what code needs to be written in OnStart() method. Or may b some settings I'm missing
Please at least hint me what to do for an application which is not GUI-based
Regards......
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queries365 wrote: I have seen GUI-based application working as Windows service
Does that mean it's a good idea?? Nope.
The OnStart method is used to start your worker threads that do the actual work of the service. If you have no idea who threading works or how to start a thread, your dead in the water.
Services do not have a GUI because, 1, there is no message pump to drive form events, 2, the OnStart method only ever fires once in the life of a service, so there's no way to get a GUI going and keep it going, and 3, OnStart fires, even if theres noone logged into the machine! If there's noone logged in, there's no desktop to show the form on.
Yeah, it's possible to do, but you have to have advanced knowledge of services and how Windows works in order to pull it off. This is information that could cover and entire book and is well beyond the capacity of a few forum posts to explain.
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Hi,
I am doing Installer. i want to add the Check Box Wizard i can able to add the Wizard .But, I am not able to Handle it . I mean How to write The code to handle CheckBoxes/Radio Button at the Time of Installing
Please send any link or code for handling Checkboxes at the time of Installing
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how i change my hindi fonts in their unicode in c# windows application
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See here[^], choose the correct script and learn it's character map.
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Indic Scripts wow
TVMU^P[[IGIOQHG^JSH`A#@`RFJ\c^JPL>;"[,*/|+&WLEZGc`AFXc!L
%^]*IRXD#@GKCQ`R\^SF_WcHbORY87֦ʻ6ϣN8ȤBcRAV\Z^&SU~%CSWQ@#2
W_AD`EPABIKRDFVS)EVLQK)JKSQXUFYK[M`UKs*$GwU#(QDXBER@CBN%
Rs0~53%eYrd8mt^7Z6]iTF+(EWfJ9zaK-iTV.C\y<pjxsg-b$f4ia>
--------------------------------------------------------
128 bit encrypted signature, crack if you can
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Like:
String strFontName="Kruti Dev 010";
label1.Font = new System.Drawing.Font(strFontName,12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
Leeladhar Ladia
LeeladharLadia@gmail.com
modified on Thursday, April 22, 2010 3:17 PM
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Hi all,
I have what I can only describe as the strangest application error I have seen. Hopefully this will not be so strange to some of you out there thou 
I have an application which essentially contains a TabControl with a number of TabPages. For example lets use tabPage1 and tabPage2 as instances.
Both tab pages have a groupBox control within them. These both work fine.
Each of those controls have a smaller group box within them.
In both of the smaller group box are a number of controls, specifically 9 ComboBoxes.
Basically apart from the Names of the controls both tab pages are the same.
Now for the issue.
I have 3 laptops all running Windows Vista, two of which have .Net 3.5 installed the other with .Net 3.0.
When running the application on the 3 machines all is fine except on one machine(not the .Net 3.0), ONE of the smaller group boxes previously mentioned just is not there.
As i said i have a number of GroupBoxes in use and also ComboBoxes. Which are visible, on the machine that is having the issue, in that very same application.
As the application works fine on all other machines tested, i assume must be a machine issue. But as a have said identical instances of the controls can be seen within the same application. Its just this one group box that has mysteriously vanished.
I hope somebody can shed some light on this issue as i just cannot understand the possiblilty of such an issue as this.
Thanks
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Try updating the graphics drivers on that machine.
After that, try specifically setting the Visible property in the form code.
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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Thanks John,
Although we didnt update the driver, we did re-install it and it solved the problem
Do you by any chance no the reason behind this?
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Nope. My advice was the result of years of experience seeing weird crap like that. Since it only happened on one of the three machines, it appeared to be a display problem, so my first thought was video drivers.
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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hi all,
how can i display a HeaderText in a GridView Horizontaly ?
i need it horizontaly cause vertical take a lot of space in my GridView and i dont have a lot.
thanks in advanced
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Ask this in the ASP.NET Forum.
But, AFAIK, horizontal column headers are not supported.
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i will try to ask but anyway thanks for answering
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AFAIK, it can be done using HTML (in the column header template), but it might have cross-browser problems. IMHO the best way would be rendering the vertical text image and placing it as the column header.
Regards,
Lev
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I figured someone may have had a workaround. That's why I told him to ask in the ASP.NET forum. I'm not expert at webforms, to be sure.
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