Windows mobile Get CellID

public partial class Form1 : Form
{
public delegate void RILRESULTCALLBACK(int dwCode, IntPtr hrCmdID, IntPtr lpData, int cbData, int dwParam);
public delegate void RILNOTIFYCALLBACK(int dwCode, IntPtr lpData, int cbData, int dwParam);
public static IntPtr hRil;

[StructLayout(LayoutKind.Explicit)]
class RILADDRESS
{
[FieldOffset(0)]
public uint dwSize;
[FieldOffset(4)]
public uint dwParams;
[FieldOffset(8)]
public uint dwType;
[FieldOffset(12)]
public uint dwNumPlan;
[FieldOffset(16)]
public byte[] sAddress = new byte[256 * 2];
//[FieldOffset(528)]
}

[StructLayout(LayoutKind.Explicit)]
class RILSUBADDRESS
{
[FieldOffset(0)]
public uint dwSize;
[FieldOffset(4)]
public uint dwParams;
[FieldOffset(8)]
public uint dwType;
[FieldOffset(12)]
public byte[] sSubAddress = new byte[256 * 2];
//[FieldOffset(524)]
}

[StructLayout(LayoutKind.Explicit)]
class RILREMOTEPARTYINFO
{
[FieldOffset(0)]
public uint dwSize;
[FieldOffset(4)]
public uint dwParams;
[FieldOffset(8)]
public RILADDRESS rilAddress = new RILADDRESS();
[FieldOffset(536)]
public RILSUBADDRESS rilSubAddress = new RILSUBADDRESS();
[FieldOffset(1060)]
public char[] sDescription = new char[256 * 2];
[FieldOffset(1572)]
public uint dwValidity;
}

[StructLayout(LayoutKind.Explicit)]
class RILCELLTOWERINFO
{
[FieldOffset(0)]
uint dwSize;
[FieldOffset(4)]
uint dwParams;
[FieldOffset(8)]
public uint dwMobileCountryCode;
[FieldOffset(12)]
public uint dwMobileNetworkCode;
[FieldOffset(16)]
public uint dwLocationAreaCode;
[FieldOffset(20)]
public uint dwCellID;
[FieldOffset(24)]
uint dwBaseStationID;
[FieldOffset(28)]
uint dwBroadcastControlChannel;
[FieldOffset(32)]
uint dwRxLevel;
[FieldOffset(36)]
uint dwRxLevelFull;
[FieldOffset(40)]
uint dwRxLevelSub;
[FieldOffset(44)]
uint dwRxQuality;
[FieldOffset(48)]
uint dwRxQualityFull;
[FieldOffset(52)]
uint dwRxQualitySub;
/* More minor interesting fields below */
}

[StructLayout(LayoutKind.Explicit)]
class RILRINGINFO
{
[FieldOffset(0)]
public uint dwSize;
[FieldOffset(4)]
public uint dwParams;
[FieldOffset(8)]
public uint dwCallType;
[FieldOffset(12)]
public uint dwAddressID;
}

private static bool done = false;
private static string result = "";

[DllImport("ril.dll")]
private static extern IntPtr RIL_Initialize(int dwIndex, RILRESULTCALLBACK pfnResult, RILNOTIFYCALLBACK pfnNotify, int dwNotificationClasses, int dwParam, out IntPtr lphRil);
[DllImport("ril.dll", EntryPoint = "RIL_GetCellTowerInfo")]
private static extern IntPtr RIL_GetCellTowerInfo(IntPtr hRil);
[DllImport("ril.dll", EntryPoint = "RIL_Hangup")]
private static extern IntPtr RIL_Hangup(IntPtr hRil);
[DllImport("ril.dll")]
private static extern IntPtr RIL_Deinitialize(IntPtr hRil);

public static void f_notify(int dwCode, IntPtr lpData, int cbData, int dwParam)
{
string strMsg = "";

switch (dwCode & 0x00ff0000) //RIL_NCLASS_ALL
{
case 0x00080000: //RIL_NCLASS_SUPSERVICE
switch (dwCode & 0xff)
{
case 0x00000001: // RIL_NOTIFY_CALLERID
RILREMOTEPARTYINFO rilRemotePartyInfo = new RILREMOTEPARTYINFO();
Marshal.PtrToStructure(lpData, rilRemotePartyInfo);
break;
case 0x00000002: // RIL_NOTIFY_DIALEDRID
break;
case 0x00000003: // RIL_NOTIFY_CALLWAITING
break;
case 0x00000004: // RIL_NOTIFY_SUPSERVICEDATA
break;
}
strMsg += "SUPSERVICE";
break;
case 0x00010000: //RIL_NCLASS_CALLCTRL
switch (dwCode & 0xff)
{
case 0x00000001: // RIL_NOTIFY_RING
RILRINGINFO rilRingInfo = new RILRINGINFO();
Marshal.PtrToStructure(lpData, rilRingInfo);
switch (rilRingInfo.dwCallType)
{
case 0x00000000:
strMsg += "UNKNOWN ";
break;
case 0x00000001:
strMsg += "VOICE ";
//RIL_Hangup(hRil);
break;
case 0x00000002:
strMsg += "DATA ";
break;
case 0x00000003:
strMsg += "FAX ";
break;
default:
strMsg += "UNHANDLED ";
break;
}
break;
case 0x00000002: // RIL_NOTIFY_CONNECT
strMsg += "CONNECT ";
break;
case 0x00000003: // RIL_NOTIFY_DISCONNECT
strMsg += "DISCONNECT ";
break;
case 0x0000000B: // RIL_NOTIFY_CALLPROGRESSINFO
strMsg += "CPI ";
break;
default:
strMsg += "SOME ";
break;
}
strMsg += "CALL";
break;
case 0x00020000: // RIL_NCLASS_MESSAGE
switch (dwCode & 0xff)
{
case 0x00000001: // RIL_NOTIFY_MESSAGE
strMsg += "NEW ";
break;
default:
strMsg += "SOME ";
break;
}
strMsg += "SMS";
break;
}
MessageBox.Show(strMsg);
}

public static void f_result(int dwCode, IntPtr hrCmdID, IntPtr lpData, int cbData, int dwParam)
{
RILCELLTOWERINFO rci = new RILCELLTOWERINFO();
Marshal.PtrToStructure(lpData, rci);

result = String.Format("MCC: {0}, MNC: {1}, LAC: {2}, CID: {3}",
rci.dwMobileCountryCode,
rci.dwMobileNetworkCode,
rci.dwLocationAreaCode,
rci.dwCellID);
done = true;
}


public static string GetCellTowerInfo()
{
IntPtr res;

RILRESULTCALLBACK result = new RILRESULTCALLBACK(f_result);
RILNOTIFYCALLBACK notify = new RILNOTIFYCALLBACK(f_notify);

res = RIL_Initialize(1, result, notify, (0x00010000 | 0x00020000 | 0x00080000), 0, out Form1.hRil);
if (res != IntPtr.Zero)
return ("Could not initialize Ril");
Form1.done = false;
Form1.result = "";
res = RIL_GetCellTowerInfo(hRil);
int i = 10;
while (i-- > 0 && !Form1.done)
{
System.Threading.Thread.Sleep(1000);
}

RIL_Deinitialize(hRil);
return Form1.result;
}
public Form1()
{
InitializeComponent();
textBox1 .Text = Form1.GetCellTowerInfo();

}

private void button1_Click(object sender, EventArgs e)
{
RIL_Deinitialize(hRil);
Application.Exit();
}

private void button2_Click(object sender, EventArgs e)
{
textBox1.Text = Form1.GetCellTowerInfo();
}
}