How to Connect to an AccessPoint on wince via C#

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I want to connect to a Wifi Access-Point programmatically on WinCE via C#.
I searched many forums and read about OpenNetCF and WinCE APIs, but had no success!
Any help will be appreciated
Thanks

Here is my code:

C#

private void btn_Connect_Click(object sender, EventArgs e)
        {
            WirelessNetworkInterface IN;
            try
            {
                // Get all the WZC Network Interfaces
                foreach (NetworkInterface currentNetworkInterface 
                    in WirelessZeroConfigNetworkInterface.GetAllNetworkInterfaces())
                {
                    if(currentNetworkInterface is WirelessNetworkInterface)
                    {

                        // Make sure we are dealing with a WZC Network Interface
                        if (currentNetworkInterface is WirelessZeroConfigNetworkInterface)
                        {
                            // Get all the Nearby Access Points that the WZC NetworkInterface can see
                            foreach (AccessPoint currentAccessPoint 
                                in ((WirelessZeroConfigNetworkInterface)currentNetworkInterface).NearbyAccessPoints)
                            {

                                if (currentAccessPoint.Name == "IKCoDiag")
                                {
                                    IN = (WirelessNetworkInterface)currentNetworkInterface;

                                    IN.Connect(currentAccessPoint.Name);
                                }
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Problem : " + ex.Message);
            }
        }

when i call this function ,this exception appears on connect function:

NotSupportedException
Inner exception :could not evaluate expression

Posted 23-Jul-14 21:32pm

saeid javani

Updated 26-Jul-14 0:51am

v2

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_Amy · Answer 1 · 2014-07-28T01:36:00

Solution 1

I think it's because you have not defined WirelessNetworkInterface object to anything by default, so the compiler flags this as undefined behavior. Try setting it to null before you use it in your program. And also it's good practice to initialize reference types to null if you don't assign something to it while defining.

--Amy

Posted 28-Jul-14 1:36am

_Amy

Comments

saeid javani 28-Jul-14 8:17am

thank for your answer amy. i do your solution and not worked!
in my code IN is defined correctly. that is an object of WirelessNetworkInterface class with all of my wireless interface attributes. the problem is from somewhere else.

saeid javani · Answer 2 · 2014-08-09T00:52:00

Solution 2

Finally, I found a good sample:
http://developer.toradex.com/knowledge-base/wifi-configuration-from-program[^]

Hope it could help someone else, too.

Posted 9-Aug-14 0:52am

saeid javani