Example:
Machine name: <machinename>
Domain name: <domainname>
User name: <username>
using System; class SystemInformation { static void Main(string[] args) { string machineName = Environment.MachineName; string domainName = Environment.UserDomainName; string userName = Environment.UserName; Console.WriteLine("Machine name: {0}", machineName); Console.WriteLine("Domain name: {0}", domainName); Console.WriteLine("User name: {0}", userName); } }