Question

Schedule using vb.net service as background and asp.net as forground?

Asked by: baghlaf

Dear Experts,

I have made an interface to build a schedule summary like sql server job schedule window when you create a new one. and i save all user settings in a database in sql server, so now i am going to make a new windows service or a program using vb.net to read all records from database and run those jobs, so is there a way to take the befinit from windows schedule to run those jobs or should i use a timer to do this, if will do it using my code, please can you tell me what is the best way to do it?

Regards

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Asked On
2009-08-14 at 23:52:03ID24654882
Tags

asp.net Schedule windows service

Topic

Microsoft Visual Basic.Net

Participating Experts
1
Points
500
Comments
19

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Answers

 

by: Mortaza_doulatyPosted on 2009-08-15 at 05:23:59ID: 25105142

You can have your own exe file written in VB .NET, then use Window Task Schedule to schedule your exe file to run as you desire.

You can also use some third-party scheduling libraries found on sites like codeproject.com

 

by: baghlafPosted on 2009-08-15 at 06:02:29ID: 25105259

i am using a form asp.net that set the inputs as shown in the picture attached.

i need to transalte this picture to running as a timer

Regards

 

by: Mortaza_doulatyPosted on 2009-08-15 at 12:34:47ID: 25106591

So what is wrong with coding? Start coding.

It seems that you need the whole code rather than trying to solve a problem...

Here are some source codes from codeproject.com

http://www.codeproject.com/KB/cs/tsnewlib.aspx
http://www.codeproject.com/KB/system/taskschedulerlibrary.aspx

And:
http://www.lmgtfy.com/?q=task+scheduler+site%3Acodeproject.com

 

by: baghlafPosted on 2009-08-15 at 22:19:28ID: 25107862

Okay, i know that i need to write whole code, but as you know i am saving those schuduling tasks in a table as a rows, means each row as a schedule task that contains a field (three types : txt path, or xml path or sql select statment) to be exucuted on each triggering that match the time. not like exe path or somthing like that. only executing somthing like sql statement. is it possible using those library to make it a custom.

Regards

 

by: Mortaza_doulatyPosted on 2009-08-15 at 23:15:58ID: 25107960

>>is it possible using those library to make it a custom.

Yes, they are all source codes, you can customize them the way you like. Beside that, they fire an event in the time of the schedule, so you can write your own code to do what ever you want.

 

by: baghlafPosted on 2009-08-15 at 23:25:23ID: 25107979

How come puting for example the sql statment in place of Application Name of the Task Class to be executed and perform a connection to database or executing reading from a file if the row type of field (txt) means i must execute read a txt file from a path that exists in some fields of the same record, and if there is a new task job add in my database i must reflect the concurnet tasks avaiable here while it's running. I think it's hard to do all this customization that meas i must do it from the scratch, isn' it?

Thanks for replying.

 

by: Mortaza_doulatyPosted on 2009-08-15 at 23:31:50ID: 25107996

As I said before, they fire an event, you can code in that event.

 

by: baghlafPosted on 2009-08-15 at 23:56:10ID: 25108034

Sorry, i couldn't find the that event that you talked about, when i debug the application it seems the library just create a job in windows Scheules Tasks and give it a scheule to run and then save it as a file. and here it finished. and then Windows is only responseible for running this job not my program.

Regards

 

by: Mortaza_doulatyPosted on 2009-08-16 at 00:08:27ID: 25108057

Which library you are using? (Those from codeproject.com?)

 

by: baghlafPosted on 2009-08-16 at 00:13:02ID: 25108065

 

by: Mortaza_doulatyPosted on 2009-08-16 at 00:26:16ID: 25108085

Sorry, those libraries use Windows Task Schedule to execute an executable file. You can put the part of your code into a exe file and schedule to run it.

Also have a look as this code, http://www.codeproject.com/KB/cs/IdaligoTime.aspx
It has timer_Fire event.

 

by: baghlafPosted on 2009-08-16 at 00:32:40ID: 25108100

>>You can put the part of your code into a exe file and schedule to run it.

I think that i will do, i will make an other exe and pass a paramenter to it whitch is the record id to run and in the exe i just read that record id of the table and execute my code.

What do you think it will affect the performance of the server runing this exe if there is mulitple timespan to run this exe.

Regards

 

by: Mortaza_doulatyPosted on 2009-08-16 at 00:47:36ID: 25108134

>>What do you think it will affect the performance of the server runing this exe if there is mulitple timespan to run this exe.

If you need to run the exe file frequently, it is not a good idea to execute the file so frequently.
But if it is not so frequent, it would be OK.

In case you need to continuously run your code, it would be better not to use a different process and create and execute it each time.

 

by: baghlafPosted on 2009-08-16 at 01:00:31ID: 25108158

What i mean is if there are 1000 records there will be 1000 hidden jobs to execute this exe with different parameter (Table Record ID). each exe with it's own instance. as i see this is the easest way to do it and also it will not affect the server, am i right?

Thank you.

 

by: Mortaza_doulatyPosted on 2009-08-16 at 01:12:22ID: 25108188

You mean to execute this exe file 1000 times simultaneously?

 

by: Mortaza_doulatyPosted on 2009-08-16 at 01:14:14ID: 25108192

If yes, having 1000 simultaneous process will kill the server!
Instead, try to just execute your exe file one time, and have some threads (again NOT 1000!) to do the task.

 

by: baghlafPosted on 2009-08-16 at 01:19:32ID: 25108203

not exactly simultaneously, it depends on the schedules for each job file. the records is like an awareness sms sending to patients. anyhow i will see what should do and what is the best solution for this.

thank you

 

by: baghlafPosted on 2009-08-16 at 01:21:20ID: 25108210

maybe i will get the record id and compare which other records that match schecules for this record and returning back and execut it. by this way i can grantee that one exe at a time will run.

Thanks

 

by: baghlafPosted on 2009-08-22 at 00:53:11ID: 31616080

It's good solution.

20120131-EE-VQP-002

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