Watcher running in VB.NET

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Hi all visitor
i created one application that connect to database(Sql server).but when the sql server service has been stop.my application still running.
My purpose is that when the sql stop service, My application should display a message to tell user about the connection. I want to know in VB.NET has any tools to watch my application when there is something wrong like i have mentioned above.

Best Regards,

Posted 20-Jul-11 15:20pm

soeun tony

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Rakesh From Patna · Answer 1 · 2011-07-20T18:04:00

Solution 1

You Create a thread which is use to check certain period your sql connection is alive or not. if not alive then you display message for user and take other action.

Posted 20-Jul-11 18:04pm

Rakesh From Patna

Dave Kreskowiak · Answer 2 · 2011-07-21T03:13:00

To add to what Rakesh said...

There is no tool that will do the monitoring for you.

You could run a background thread that will "ping" the server every so often. Basically, it would just try and open a connection to the database and run a very small query, then close it's connection. If this works, then the service is running. If not, well you've got your answer...

DO NOT OPEN A CONNECTION TO THE DATABASE AND KEEP IT OPEN FOR THE LIFE OF YOUR APPLICATION!

There may be someone who says that you need to use the Service Manager classes to check the state of the SQL Server service. The problem with this is that you need more than normal user permissions to do this and you would need to know the exact name of the SQL Server service instance. If you are running multiple instances of SQL on the same server, the name will change.