[2005] Checking if online?

[Icyculyr Fr0st]

Basically I need an Event for when your internet connection goes on, and off

Or just a way to detect if its on or off, my game will use a chat & a mySQL database, and basically you can't play without internet connection

So, does anyone know how? and if so give an example please and thankyou

[.paul.]

you could use this API function

Public Declare Function InternetGetConnectedState Lib "wininet.dll" (ByRef lpdwFlags As Integer, ByVal dwReserved As Integer) As Integer

'FLAGS
'Modem is busy.
Public Const ModemConnectionIsBusy As Integer = &H8S

'Internet connection is currently Offline
Public Const InternetIsOffline As Integer = &H20S

'Internet connection is currently configured
Public Const InternetConnectionIsConfigured As Integer = &H40S

'Internet connection VIA Modem.
Public Const ModemConnection As Integer = &H1S

[penagate]

You could, but they only work for dialup and VPN connections. If you're connected through a router, like just about all DSL and cable connections, you need to ping an external host.

However, since you're accessing a server over the 'net anyway, just assume that it's going to be online, and add some code to trap a connection failure. How you do this depends on how you are connecting in the first place.

[Icyculyr Fr0st]

How can I ping a site, like google, lol

[sapator]

my.Computer.Network.Ping

[talkro]

dim pingSender as New Ping()
dim reply as pingReply = pingSender.Send("www.google.com")
if reply.status = IPStatus.Success then
  'success
else
  'failure
end if

[penagate]

How can I ping a site, like google, lol

There's no need. Aren't you accessing a remote host anyway? You don't have to manually check whether the connection is still present, just carry on as if it were and your program flow should handle the case when it isn't.

[Icyculyr Fr0st]

Yes, but I wont be setting up the mySQL database for a while, therefore I need something that can check for a net connection
ping, ping reply, and ip status, dont show up as classes to choose from (it gives errors saying they're not aswell)

should I include something? (what should I?)

[penagate]

If you don't have anything to connect to then why do you need to check whether you can connect to it?

I'm sorry but I can't see the problem.

[sapator]

Carefull with "dim reply as pingReply = pingSender.Send("www.google.com")"
because if you don't have a network enabled it generates an exception so you must do a try catch in any of the solutions.
Ping , pingreply is on the Net.NetworkInformation namespace

[Icyculyr Fr0st]

I dont know how to import namespaces so they're being used in my script

I also dont know how to use Try... Catch

Can anyone give an example of both problems, thanks

If you don't have anything to connect to then why do you need to check whether you can connect to it?

I'm sorry but I can't see the problem.

The problem is very very soon you will need connect to something, therefore, I am asking before I need it, so I know how

[talkro]

for import namesapce use the imports instruction at the very beginning of your class

try
  'your work here
catch ex as exception
  'something when wrong here
end try

[stimbo]

I dont know how to import namespaces so they're being used in my script

Just put this statement at the top of your form, the ping code will work then:

Imports System.Net.NetworkInformation

As for not knowing how to use Try/Catch, that's where MSDN really comes in handy, loads more info than I could give. Just look it up. It's not difficult to understand the Try/Catch block.