CODEWITHSUNDEEP
c#network-programmingwindows-7usbmodem
Martin Christiansen
Martin Christiansen

Reputation: 1117

How to establish dial-up internet connection

I have a Nokaia 3G USB modem (stick) that I want to turn on and off programmatically.

This modem installs itself in Windows 7 as just another network adapter - no new modems are added.

Because no modem is added I cannot use RAS to establish connection from code, as I can (and do) with many other 3G USB modem sticks.

In the Network Connections window the network adapter looks like a WLAN adapter (you know, with those "signal strength bars" in the icon), and by right-clicking it i am able to do the connect/disconnect action interactively.

But how can I establsh connection from code with this modem? I'm sure there must be a simple way...?

Upvotes: 2

Views: 1625

Answers (1)

Panagiotis Kanavos
Panagiotis Kanavos

Reputation: 131483

What you are really asking is, how to enable or disable a network connection. You can do this using WMI as shown in this SO question, to enable or disable the card, using the appropriate methods of the Win32_NetworkAdapter class. You can check, but not change, the connection status by reading the NetConnectionStatus property.

In your case you should probably use a query like:

"SELECT * FROM Win32_NetworkAdapter WHERE Manufacturer == 'Nokaia' "

or whatever the actual manufacturer name is. Querying by name is not guaranteed to work, as the user can change the name of the connection.

Also check "How can I tell if a wireless network is connected" on Technet for a more thorough description of how to use Win32_NetworkAdapter.

Upvotes: 1

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