AutoDetection of Internet Connection

[Rohan Ranade]

Hi. I am facing a difficulty. My program should fire up
automatically, everytime the user connects to the
Internet. How can it be done using C#? Is there any API
call?

Thank You.

[Ignacio Machin \( .NET/ C# MVP \)]

Hi Rohan,

I don;t know if there is a API call that let you know when a DialUP
connection is established, even so that do not assure that that connection
is connected to the "internet" it may be a direct connection between two
machines to play a game for example.

Other thing you can do is use a timer and test the connection to a given
address. this is what the ICQ/MSN, etc do.

Hope this help,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"Rohan Ranade" <ro**********@yahoo.com> wrote in message
news:0b****************************@phx.gbl...

Hi. I am facing a difficulty. My program should fire up
automatically, everytime the user connects to the
Internet. How can it be done using C#? Is there any API
call?

Thank You.

[Mohamed Enein]

One thing you can do it to get a list of IP addresses on the machine and
check if you have valid IP Address (one belongs to Class A or B or C and
not your local host IP (127.0.0.1).
you can use System.NET.Dns and System.NET.IPHostEntry to get this info:
eg:
System.Net.IPHostEntry h =
System.Net.Dns.GetHostByName(System.Net.Dns.GetHos tName());
foreach (System.Net.IPAddress ip in h.AddressList)
CheckIP(ip);// do the check here

thanks,
Mohamed
--------------------

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From: "Rohan Ranade" <ro**********@yahoo.com>
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Subject: AutoDetection of Internet Connection
Date: Tue, 21 Oct 2003 08:56:21 -0700
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Hi. I am facing a difficulty. My program should fire up
automatically, everytime the user connects to the
Internet. How can it be done using C#? Is there any API
call?

Thank You.