Question

I have an application written in C# that needs to be able to configure the network adapters in Windows. I have this basically working through WMI, but there are a couple of things I don’t like about that solution: sometimes the settings don’t seem to stick, and when the network cable is not plugged in, errors are returned from the WMI methods, so I can’t tell if they really succeeded or not.

I need to be able to configure all of the settings available through the network connections – Properties – TCP/IP screens.

What’s the best way to do this?

Answer 1

You could use Process to fire off netsh commands to set all the properties in the network dialogs.

eg: To set a static ipaddress on an adapter

netsh interface ip set address 'Local Area Connection' static 192.168.0.10 255.255.255.0 192.168.0.1 1 

To set it to dhcp you’d use

netsh interface ip set address 'Local Area Connection' dhcp 

To do it from C# would be

Process p = new Process(); ProcessStartInfo psi = new ProcessStartInfo('netsh', 'interface ip set address \'Local Area Connection\' static 192.168.0.10 255.255.255.0 192.168.0.1 1'); p.StartInfo = psi; p.Start(); 

Setting to static can take a good couple of seconds to complete so if you need to, make sure you wait for the process to exit.