전화번호 가져오기(C#)

Windows Mobile을 기반으로 C#으로 프로그래밍하려고 하니 스마트폰의 전화번호를 가져오는데
잘 안되더군요.. 이것 저것 많이 해보았습니다.

결국, 다수의 삽질과 구글링으로 SIM에서 전화번호를 가져오는 코드가 있더군요.

아래 코드를 사용하시면 됩니다.

    public enum AddressType
    {
        /// <summary>Unknown phone number type.</summary>
        Unknown,
        /// <summary>International phone number.</summary>
        International,
        /// <summary>National phone number.</summary>
        National,
        /// <summary>Network-specific phone number.</summary>
        NetworkSpecific,
        /// <summary>Subscriber phone number.</summary>
        Subscriber,
        /// <summary>Alphanumeric phone number.</summary>
        Alphanumeric,
        /// <summary>Abbreviated phone number.</summary>
        Abbreviated
    }

    public struct PhoneAddress
    {
        /// <summary>The address type.</summary>
        public AddressType AddressType;
        /// <summary>The phone number in string format.</summary>
        public String Address;
    }

    public class Sim
    {
        [DllImport("sms.dll")]
        private static extern IntPtr SmsGetPhoneNumber(IntPtr psmsaAddress);

        unsafe public static PhoneAddress GetPhoneNumber()
        {
            PhoneAddress phoneaddr = new PhoneAddress();

            Byte[] buffer = new Byte[516];
            fixed (byte* pAddr = buffer)
            {
                IntPtr res = SmsGetPhoneNumber((IntPtr)pAddr);
                if (res != IntPtr.Zero)
                    throw new Exception("Could not get phone number from SIM");

                byte* pCurrent = pAddr;
                phoneaddr.AddressType = (AddressType)Marshal.ReadInt32((IntPtr)pCurrent);
                pCurrent += Marshal.SizeOf(phoneaddr.AddressType);
                phoneaddr.Address = Marshal.PtrToStringUni((IntPtr)pCurrent);
            }

            return phoneaddr;
        }
    }