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VB.net 2003/2005- Can't figure out how to test for working internet connectionI've been trying to figure out how to test for a valid internet connection.
I am able to connect to a valid internet connection, but when it drops, or if it is not there when my program starts, I get an exception. This probably is a newbie question, but I do not even know what or how I would trap that error. Look into Ping
http://msdn2.microsoft.com/en-us/library/system.net.networkinformation.ping(VS.80).aspx just ping a known ip address and see if it is reachable. Show quoteHide quote "adalton" <adal***@newsdalton.com> wrote in message news:eglhmi02dj3@news1.newsguy.com... > I've been trying to figure out how to test for a valid internet > connection. > I am able to connect to a valid internet connection, but when it drops, or > if it is not there when my program starts, I get an exception. > > This probably is a newbie question, but I do not even know what or how I > would trap that error. And what if the user is behind a Proxy ?? :-)
in most company`s people are behind a connectbox , or proxy so ping is only possible to the local network i would go for another aproach i would just request a small test page on my own server , even better you could also implement a so called heartbeat a background thread just request a page every few seconds this way you can even detect problems on the network to your server during transfers regards Michel Posseth [MCP] Show quoteHide quote "Stacey" <StaceyL@community.nospam> schreef in bericht news:eoUWKTj7GHA.3280@TK2MSFTNGP02.phx.gbl... > Look into Ping > http://msdn2.microsoft.com/en-us/library/system.net.networkinformation.ping(VS.80).aspx > > just ping a known ip address and see if it is reachable. > "adalton" <adal***@newsdalton.com> wrote in message > news:eglhmi02dj3@news1.newsguy.com... >> I've been trying to figure out how to test for a valid internet >> connection. >> I am able to connect to a valid internet connection, but when it drops, >> or >> if it is not there when my program starts, I get an exception. >> >> This probably is a newbie question, but I do not even know what or how I >> would trap that error. > > On 12 Oct 2006 13:58:42 GMT, adalton <adal***@newsdalton.com> wrote:
>I've been trying to figure out how to test for a valid internet connection. I ran across this article the other day which you may find useful:>I am able to connect to a valid internet connection, but when it drops, or >if it is not there when my program starts, I get an exception. > >This probably is a newbie question, but I do not even know what or how I >would trap that error. http://www.codeproject.com/vb/net/CC_ConnectionStatePackage.asp Gene Hello adalton,
I see people ask this a lot. Who cares if there is a working internet connection. That doesn't tell you anything. What you really want to know is, "Does the address I want to reach exist from this location?". So wrap your connection code in a Try/Catch block and trap any connection failures. -Boo Show quoteHide quote > I've been trying to figure out how to test for a valid internet > connection. I am able to connect to a valid internet connection, but > when it drops, or if it is not there when my program starts, I get an > exception. > > This probably is a newbie question, but I do not even know what or how > I would trap that error. > 
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