How do I find fully qualified hostname of my machine in C#?

Ex : I want something like abc.hyd.mycompany.com. My requirement is to parse this name and initialize appropriate service.

use System.net;
Dns.GetHostName() doesn't return fully qualified name it just gives "abc"

From stackoverflow

• You may be able to get the whole DNS string like this:

  System.Net.Dns.GetHostEntry(System.Net.Dns.GetHostName()).HostName
  

  We don't have full fledged DNS names where I work, but it does give me a three level faux domain name instead of just the hostname.

  Rick Glos : That worked on my machine :)

  : This works. Thanks a lot :)

• If the above doesn't work, you can also try retrieving it from the environment:

  var dnsName = new StringBuilder();
  dnsName.Append(Environment.GetEnvironmentVariable("COMPUTERNAME")).Append(".");
  dnsName.Append(Environment.GetEnvironmentVariable("USERDNSDOMAIN"));
  

  pduncan : This may not work - USERDNSDOMAIN may not be the same as the domain that the machine belongs to.