Re: wcf or windows service - WPF Discussion Boards

30-Dec-10 2:09

Hi,
Due to business requirements, I have to have something like a process to run all the time to retrieve data and do processing with it...
My first guess is to create a windows service so that it can be started and be left running.

Question:
Is windows service the best choice for my requirement or can I have a wcf i.e. .svc file to do the same thing i.e. (get started and be left running all the time). ?

#realJSOP30-Dec-10 2:36

30-Dec-10 2:36

Yes - a windows service is what you need.

A WCF service is for communications between a two clients or a client and a server. You would use a WCF service *inside* your Windows service.

".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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"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

Pete O'Hanlon30-Dec-10 2:39

30-Dec-10 2:39

A book is what he needs. He's been posting basic stuff in this forum for weeks now, and a good introductory text or two would serve him better.

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads

#realJSOP30-Dec-10 5:05

30-Dec-10 5:05

Yeah, I know - I decided to take the chance that he would have gotten some form of a clue by now, but I guess not, based on his response to my answer.

In the end, all you can do is point and laugh... Smile | :)

SledgeHammer0130-Dec-10 6:28

SledgeHammer01

30-Dec-10 6:28

Well, unfortunately, you keep answering his retarded questions. If you stopped, maybe he *would* get a clue. I think its time Arkiboy stepped up and became an Arkiman and quit depending on people to spoon feed him.

#realJSOP30-Dec-10 7:34

30-Dec-10 7:34

I'll give him answers to a certain degree, but he's gonna have to cowboy up and do most of the legwork himself.

Michael Agroskin31-Dec-10 12:46

Michael Agroskin

31-Dec-10 12:46

Just you wait. He will start asking questions like "I went to the toilette, but there are no bathroom tissues. What do I do?"

arkiboys30-Dec-10 2:56

30-Dec-10 2:56

I would like to return the data to the GUI from the windows service.
1- Should the GUI call WCF which gets the data from window service?
OR
2- Should the GUI just call the windows service to get the data?
Thanks

#realJSOP30-Dec-10 5:08

30-Dec-10 5:08

The windows service shouldn't return the data, it should store the data locally, and send out a system-wide message that new data is available. If a desktop application is running that knows about the message, it can then load the data from the local source.

arkiboys30-Dec-10 10:47

30-Dec-10 10:47

I see what you mean and this is what I am trying to devlope at present.
But where does WCF come into this?
Thanks

Pete O'Hanlon31-Dec-10 0:09

31-Dec-10 0:09

Buy some books. Read them. Learn from them. Stop expecting us to spoonfeed you.

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads

arkiboys31-Dec-10 0:37

31-Dec-10 0:37

Thank you

Michael Agroskin31-Dec-10 12:55

Michael Agroskin

31-Dec-10 12:55

Just you wait. He will start asking questions like "I left my car keys in another jacket. What do I do?"

Michael Agroskin31-Dec-10 12:58

Michael Agroskin

31-Dec-10 12:58

How can somebody be banned or at least be filtered out?

#realJSOP3-Jan-11 0:50

3-Jan-11 0:50

Michael Agroskin wrote:
How can somebody be banned or at least be filtered out?

This is an inappropriate question. He'll get better, but the question is whether or not we'll all live to see it. There's no reason to ban him, and foltering users in a programming forum is a bad idea.

backgroundworker

arkiboys28-Dec-10 23:52

28-Dec-10 23:52

There is a fully working .net windows application which uses the background worker process in the form.

Using my new silverlight 4 application, I now would like to make it use the functionalities as the application in the winform i.e. background worker, etc...

Question:
As I am using the wcf to retrieve data and pass to the silverlight page, how/where do I use the background worker process? Do I use it in the service or in the silverlight page?

Thanks

Abhinav S29-Dec-10 0:12

Abhinav S

29-Dec-10 0:12

arkiboys wrote:
As I am using the wcf to retrieve data and pass to the silverlight page, how/where do I use the background worker process? Do I use it in the service or in the silverlight page?

Probably depeneds on what the background was doing in the windows forms application.
Was it something to do with the UI - it will go into the Silverlight UI.

The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.

My latest tip/trick

arkiboys29-Dec-10 0:23

29-Dec-10 0:23

yes, it is to do with the UI.

arkiboys29-Dec-10 0:55

29-Dec-10 0:55

This code is inthe winiform
private void BGworker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
this.Refresh();
}

How can the this.refresh be translated to be placed inside the silverlight page?
Thanks

Pete O'Hanlon29-Dec-10 1:50

29-Dec-10 1:50

If you are retrieving the data using WCF, then you are already refreshing the data asynchronously. This renders the need to read the data in using a background worker, moot - after all, your UI will still be responsive while the data is being fetched.

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads

arkiboys29-Dec-10 2:26

29-Dec-10 2:26

You mean there is no need to use the backgroundworker?

Pete O'Hanlon29-Dec-10 3:05

29-Dec-10 3:05

Not if you are already retrieving the data asynchronously (which you are using RIA services). As a test, write a simple data method to return a single integer from the server side but give it a delay of one minute before it returns. When you call this method, your UI will still remain responsive.

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads