C# Read Windows Mobile Broadband connection properties

Question

First up, here\'s the background:

We have a Windows Forms application (written in C#, .NET Framework 3.5) currently running on full Windows 7 tablets, which have a 3

Answer 1

Checking the SIM is inserted and working / activated:

try
        {
            MbnInterfaceManager mbnInfMgr = new MbnInterfaceManager();
            IMbnInterfaceManager mbnInfMgrInterface = mbnInfMgr as IMbnInterfaceManager;
            if (mbnInfMgrInterface != null)
            {
                IMbnInterface[] mobileInterfaces = mbnInfMgrInterface.GetInterfaces() as IMbnInterface[];
                if (mobileInterfaces != null && mobileInterfaces.Length > 0)
                {
                    try
                    {
                        MBN_READY_STATE readyState = mobileInterfaces[0].GetReadyState();

                        switch (readyState)
                        {
                            case MBN_READY_STATE.MBN_READY_STATE_BAD_SIM:
                                MessageBox.Show("The SIM is invalid (PIN Unblock Key retrials have exceeded the limit).");
                                break;
                            case MBN_READY_STATE.MBN_READY_STATE_DEVICE_BLOCKED:
                                MessageBox.Show("The device is blocked by a PIN or password which is preventing the device from initializing and registering onto the network.");
                                break;
                            case MBN_READY_STATE.MBN_READY_STATE_DEVICE_LOCKED:
                                MessageBox.Show("The device is locked by a PIN or password which is preventing the device from initializing and registering onto the network.");
                                break;
                            case MBN_READY_STATE.MBN_READY_STATE_FAILURE:
                                MessageBox.Show("General device failure.");
                                break;
                            case MBN_READY_STATE.MBN_READY_STATE_INITIALIZED:
                                try
                                {
                                    IMbnSubscriberInformation subInfo = mobileInterfaces[0].GetSubscriberInformation();

                                    if (subInfo != null)
                                    {
                                        SIMNumber = subInfo.SimIccID;
                                    }
                                    else
                                    {
                                        SIMNumber = "Unable to read SIM info";
                                    }
                                }
                                catch (Exception)
                                {
                                    SIMNumber = "Unable to read SIM info";
                                }

                                IMbnRegistration registration = mobileInterfaces[0] as IMbnRegistration;
                                if (registration != null)
                                {
                                    try
                                    {
                                        MBN_REGISTER_STATE regState = registration.GetRegisterState();

                                        switch (regState)
                                        {
                                            case MBN_REGISTER_STATE.MBN_REGISTER_STATE_DENIED:
                                                // SIM Inactive
                                                simInactive = true;
                                                MessageBox.Show("The device was denied registration. The most likely cause of this error is an Inactive SIM.");
                                                break;
                                            case MBN_REGISTER_STATE.MBN_REGISTER_STATE_DEREGISTERED:
                                                // Do nothing - this is returned before the device has tried to register
                                                break;
                                            case MBN_REGISTER_STATE.MBN_REGISTER_STATE_HOME:
                                                // Do nothing
                                                break;
                                            case MBN_REGISTER_STATE.MBN_REGISTER_STATE_NONE:
                                                MessageBox.Show("The device registration state is unknown. This state may be set upon failure of registration mode change requests.");
                                                break;
                                            case MBN_REGISTER_STATE.MBN_REGISTER_STATE_PARTNER:
                                                // Do nothing
                                                break;
                                            case MBN_REGISTER_STATE.MBN_REGISTER_STATE_ROAMING:
                                                // Do nothing
                                                break;
                                            case MBN_REGISTER_STATE.MBN_REGISTER_STATE_SEARCHING:
                                                // Do nothing
                                                break;
                                            default:
                                                MessageBox.Show("GetRegisterState returned an unexpected state: " + regState.ToString());
                                                break;
                                        }
                                    }
                                    catch (Exception ex)
                                    {
                                        MessageBox.Show("GetRegisterState Error: " + ex.Message);
                                    }
                                }
                                break;
                            case MBN_READY_STATE.MBN_READY_STATE_NOT_ACTIVATED:
                                MessageBox.Show("The subscription is not activated.");
                                break;
                            case MBN_READY_STATE.MBN_READY_STATE_OFF:
                                MessageBox.Show("The mobile broadband device stack is off.");
                                break;
                            case MBN_READY_STATE.MBN_READY_STATE_SIM_NOT_INSERTED:
                                MessageBox.Show("The SIM is not inserted.");
                                break;
                            default:
                                MessageBox.Show("GetReadyState returned an unexpected state: " + readyState.ToString());
                                break;
                        }
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show("GetReadyState Error: " + ex.Message);
                    }
                }
                else
                {
                    MessageBox.Show("No mobileInterfaces found.");
                }
            }
            else
            {
                MessageBox.Show("mbnInfMgrInterface is null.");
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show("Error: " + ex.Message);
        }