I am getting an OpenNETCF.Net.AdapterException with a message of: DeviceIoControl( IOCTL_NDIS_UNBIND_ADAPTER ), when executing the following code:

        private void button1_Click(object sender, EventArgs e)
        {
            AdapterCollection adapters = Networking.GetAdapters();
            foreach (Adapter adapter in adapters)
            {
                if (adapter.Name.StartsWith("FMAC"))
                {
                    adapter.UnbindAdapter();
                }
            }
        }

 This same is true for RebindAdapter() and BindAdapter()

Am I doing something wrong?  

I am using:

- SDF 2.3  (also tried it on 2.2)
- .NETCF 2.0
- WinCE 4.0

Thank you,
Philip Fourie

 What kind of adapter is this?  Are you certain it supports unbind/rebind (things like USB don't)?

Hi ctacke,

This is a network (LAN) adapter that is built into the device. Stepping into the code it seems that the native method DeviceIoControl fails with a last error win error of 87 (I think it means invalid parameter from searching the MSDN but I might be mistaken).

 Thanks for the help,

Philip

 Yes, an 87 is "Invalid Parameter", though with IOCTL's it usually really ambiguous as to what it thought was invalid.  Unbind is really simple, it's just a handle going in no in or out buffers. We definitely test unbind and rebind in our integration tests, so it's certainly a method that's been tested and known good at least on some hardware.  What exact hardware are you using?