How to get my standard modem’s IP in C#?

Modems generally do not have IP addresses; do you mean NICs on your system?

i have GPRS modem which has IP address. i need it.Please help me?

ok what is your solution sir? i need help really help

yusufkaratoprak wrote:

ok what is your solution sir? i need help really help

I am afraid there is no solution. You can only find the local IP addresses of hosts/devices that are listed in your hosts database. If you want the address of a non-local device then you need to use DNS lookup to find it.

Thanks your help and gentalman sense. But i find a site: http://whatismyipaddress.com/[^] This site give me my ip number. How can i do that with C#.

yusufkaratoprak wrote:

This site give me my ip number.

This site receives your IP address when you connect to it; that is how it finds it. Also if the address is publicly registered it can deduce where in the world the IP address is - see the FAQ section on the site as it explains this in greater detail. However if you do not know a device/site's IP address and it does not have a registered name in a DNS lookup somewhere there is no way to find it.

You may try to send the following AT command to your modem: "AT+CGPADDR=1".

If your modem is connected to COM port (assume to port "COM1"), the code may looks as follows:

// ... don't forget to set up baudrate, parity, etc.
SerialPort port = new SerialPort("COM1");
port.DataReceived += new SerialDataReceivedEventHandler(ProcessReceivedData);

port.Open();
port.Write("AT+CGPADDR=1");

and the SerialDataReceivedEvent handler:

private static void ProcessReceivedData(Object sender, SerialDataReceivedEventArgs e)
{
    SerialPort port = (SerialPort)sender;

    string response = port.ReadExisting();
    Console.WriteLine(response);
}

It should work if your system currently does not use the modem (otherwise, port is busy and you'll get UnauthorizedAccessException).