Solved

Need help error handling a windows service

Posted on 2016-10-05
2
48 Views
Last Modified: 2016-10-05
Good morning Experts,
I need help error handling a windows service I wrote in VB.Net.

I put all of my processes in a Try \ Catch block.  When an error is encountered the code in the Catch executes and logs the error.
I want to prevent the service from stopping and to just continue to process the next record.  How can I do this?

thanks,
mrotor
0
Comment
Question by:mainrotor
2 Comments
 
LVL 22

Expert Comment

by:Snarf0001
ID: 41830392
It should already be doing that.  As long as you're not rethrowing in the catch block, then it won't stop the service.

If it is, you must have another failing block somewhere that's not wrapped in a try.
If you can post the code / error message, can see.
0
 
LVL 33

Accepted Solution

by:
it_saige earned 500 total points
ID: 41830411
It depends on your logic...  You may put everything into a try...catch block but you need to understand what that means and how it can affect the flow of your logic.

For example, what is the difference between this:
Module Module1
	Sub Main()
		Console.WriteLine("Starting Service")
		RunService()
		Console.WriteLine("Exiting Service")
		Console.ReadLine()
	End Sub

	Sub RunService()
		Try
			While (True)
				Console.WriteLine("Processing...")
				Throw New Exception("Exception Thrown")
			End While
		Catch ex As Exception
			Console.WriteLine(ex.Message)
		End Try
	End Sub
End Module

Open in new window


And this:
Module Module1
	Sub Main()
		Console.WriteLine("Starting Service")
		RunService()
		Console.WriteLine("Exiting Service")
		Console.ReadLine()
	End Sub

	Sub RunService()
		While (True)
			Try
				Console.WriteLine("Processing...")
				Throw New Exception("Exception Thrown")
			Catch ex As Exception
				Console.WriteLine(ex.Message)
			End Try
		End While
	End Sub
End Module

Open in new window


The difference is the location of the exception.  The first code example will stop processing when the the first exception is thrown because the try...catch encloses the processing loop; e.g. -Capture.JPGWhereas, the second code example will continue to run into perpetuity; e.g. -Capture.JPG
So, again, it comes down to your logic and it's layout.

-saige-
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
How to limit User Input 2 27
MailAddress in vb 4 29
Upgrading my SSIS package in VS 2012 6 59
VB.net DataGridView show bit field as Text column not CheckBox column 5 18
Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…

856 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question