Tools Used : Visual C# .NET

The .Net DNS class can be used to get a host name or an IP of a given host name. To use DNS class in your project, you need to include System.Net

Include System.Net Reference

And say I want to get IP address if www.mindcracker.com. The given code will do that for you.

using System;
using System.Net;
namespace DNSName
{
/// <summary>
/// Summary description for Class1.
/// </summary>
class Class1
{
static void Main(string[] args)
{
IPHostEntry ipEntry = Dns.GetHostByName (http://www.mindcracker.com/);
IPAddress [] IpAddr = ipEntry.AddressList;
for (int i = 0; i < IpAddr.Length; i++)
{
Console.WriteLine ("IP Address {0}: {1} ", i, IpAddr[i].ToString ());
}
}
}
}

Get Local System's host name and IP

Use GetHostName with no parameter to return the host name of a local machine. Once you have host name, pass this host name as a parameter in GetHostByName. See above.

string strHostName = Dns.GetHostName ();