Testing Internet connection?

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

sprungli - 24 Sep 2004 19:26 GMT

In a Library or Win Forms application how can my code test whether the
computer is connected to the Internet? (The computer could use a dial-up
connection or it could be on a network.)

TIA

Reply to this Message

Sijin Joseph - 26 Sep 2004 16:10 GMT

There are two ways you can do that, one is to simply try and make a web
request to a known url and catch the exception that would occur when
there is no internet connection, this method is detailed here

http://www.code101.com/Code101/DisplayArticle.aspx?cid=77

and here

http://www.developerfusion.com/show/3903/

secondly, you can use the InternetGetConnectedState() API from
WinInet.dll, this method is detailed here

http://www.vbip.com/wininet/wininet_dialup.asp

and here

http://vbnet.mvps.org/index.html?code/network/internetgetconnectedstate.htm

Hope that helps.

Sijin Joseph
http://www.indiangeek.net
http://weblogs.asp.net/sjoseph

> In a Library or Win Forms application how can my code test whether the
> computer is connected to the Internet? (The computer could use a dial-up
> connection or it could be on a network.)
>
> TIA

Reply to this Message

Free Magazines

Get these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...