如何获得3G调制解调器的IP地址？

Question

My GPRS modem has got a sim card. it can connect Web. Web service give it a ip number. i need it. like that: http://www.your-ip-address.com/

How can i do that C#?

Answer 1

You can use the static method WebClient.DownloadString(url) to read your external IP address from any web service providing such data:

string ip = System.Net.WebClient.DownloadString("http://whatismyip.org/");

If you are going to use this in a production environment, better make sure that the URL you are pointing to, is guaranteed to stay around for the entire lifespan of your application. The best way is probably to host the web service yourself.

Also, you should add some error checking around this code, as it will fail if the internet connection or the web service is unavailable.

Answer 2

You can create a WebRequest to http://whatismyip.com/automation/n09230945.asp which houses only your IP address

Start here

Answer 3

You can get a list of your IP addresses via DNS using the following code:

var name = Dns.GetHostName();
var entry = Dns.GetHostEntry(name);
foreach (var address in entry.AddressList) {
   Console.WriteLine(address);
}

If you want the IP address as a property of the hardware, you can use the System.Management.ManagementClass with the name Win32_NetworkAdapterConfiguration . See http://msdn.microsoft.com/en-us/library/system.management.managementclass.aspx for details.