How to test internet connection in VB.NET?

30 May 2006 10:12 PM

John Riddle

Hello,

I have an application that runs continously gives an error and stops working
if the internet goes down (which happens for about 5-10 minutes several times
a day. Can anybody tell me how to test for internet connectivity when this
happens and then pause processing until internet connectivity is back up?

Thanks.

30 May 2006 10:26 PM

Mehdi

On Tue, 30 May 2006 15:12:02 -0700, John Riddle wrote:

> I have an application that runs continously gives an error and stops working
> if the internet goes down (which happens for about 5-10 minutes several times
> a day. Can anybody tell me how to test for internet connectivity when this
> happens and then pause processing until internet connectivity is back up?

Open a connection to a server garanteed to be up 24/7 such as
microsoft.com, apple.com or google.com. If the connection succeeds, your
Internet connection is up. If it fails, you might want to try out another
site first before declaring that the connection has been lost though.

31 May 2006 6:52 PM

John Riddle

Thanks guys. Tried Mehdi's response and it worked great.

Thanks.

Try

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"Mehdi" wrote:

> On Tue, 30 May 2006 15:12:02 -0700, John Riddle wrote:
>
> > I have an application that runs continously gives an error and stops working
> > if the internet goes down (which happens for about 5-10 minutes several times
> > a day. Can anybody tell me how to test for internet connectivity when this
> > happens and then pause processing until internet connectivity is back up?
>
> Open a connection to a server garanteed to be up 24/7 such as
> microsoft.com, apple.com or google.com. If the connection succeeds, your
> Internet connection is up. If it fails, you might want to try out another
> site first before declaring that the connection has been lost though.
>

31 May 2006 12:06 AM

Homer J Simpson

"John Riddle" <JohnRid***@discussions.microsoft.com> wrote in message
news:7E3CF9A1-F411-4A73-972F-F7D8567500DE@microsoft.com...

> I have an application that runs continously gives an error and stops
> working
> if the internet goes down (which happens for about 5-10 minutes several
> times
> a day. Can anybody tell me how to test for internet connectivity when this
> happens and then pause processing until internet connectivity is back up?

Maybe shell 'ping' and see what happens?

31 May 2006 5:28 AM

Cor Ligthert [MVP]

John,

Try the first IP next after your router.

http://msdn2.microsoft.com/en-us/library/system.net.networkinformation.ping.aspx

http://msdn2.microsoft.com/en-us/library/he5sca5t.aspx

I hope this helps,

Cor

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"John Riddle" <JohnRid***@discussions.microsoft.com> schreef in bericht
news:7E3CF9A1-F411-4A73-972F-F7D8567500DE@microsoft.com...
> Hello,
>
> I have an application that runs continously gives an error and stops
> working
> if the internet goes down (which happens for about 5-10 minutes several
> times
> a day. Can anybody tell me how to test for internet connectivity when this
> happens and then pause processing until internet connectivity is back up?
>
> Thanks.