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Editorial Team
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Asked: 2026-05-12T07:52:14+00:00

From what I have seen, in the MSDN documentation and in other questions here

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From what I have seen, in the MSDN documentation and in other questions here on SO, there are four ways to get the local machine name. 

Environment.MachineName;
System.Net.Dns.GetHostName();
System.Windows.Forms.SystemInformation.ComputerName;
System.Environment.GetEnvironmentVariable("COMPUTERNAME");

Is there a differnece in what they methods will return or will they all return the exact same thing all of the time?

Note:
I first saw the list in this post:
How do I get the local machine Name?

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1 Answer

  1. Editorial Team

    Environment.MachineName and System.Windows.Forms.SystemInformation.ComputerName are identical and returns the computer’s NetBIOS name. This name is restricted to 15 characters and only visible on the LAN.

    System.Net.Dns.GetHostName() returns the computer’s TCP/IP based hostname. By adding a domain suffix to the hostname you can resolve your computer’s IP address across LANs / on the internet.

    System.Environment.GetEnvironmentVariable("COMPUTERNAME") returns the computer name set during installation. NetBIOS and hostname are initially set to the same name.

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