Retrieving the computer domain namne

This is how to retrieve the full domain name of the current computer:

public static string GetFullComputerName()
{
  ManagementObject cs;
  using (cs = new ManagementObject("Win32_ComputerSystem.Name='" +
      Environment.MachineName + "'"))
  {
    cs.Get();
    return String.Format("{0}.{1}", Environment.MachineName, cs["domain"]);
  }
}

To make this work, you need a reference to System.Management.dll.

The result will be something like:

active99.i.activesolution.se

If anyone has a better approach, please leave a comment 🙂

/Emil