How to get full host name

Question

Enviroment.MachineName returns short name:

public static string GetCurrentMachineName()
{
    return GetMachineName(Environment.MachineName); //returns hostname
}

I have short hostname: shortName and fullname: shortName.company.local. So, when i call GetCurrentMachineName() i get only shortName instead 'shortName.company.local'. What can be wrong?

P.S.:
It is not work for me: for example, my hostname is hostname1. And my friend at current network has hostname named hostname2. So, when i execute this code:

return System.Net.Dns.GetHostEntry("").HostName;

with hostname2 it resolve to hostname2.company.local and hostname1 to my hostname.

Answer 1

I solve ,my problem:

1. Flush DNS cache

   ipconfig /flushdns

2. Clear my hosts file.

Thank you for help!