How do I get the local machine name in C#?

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最佳答案

System.Environment.MachineName

It works unless a machine name has more than 15 characters.

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You should be able to use System.Environment.MachineName for this. It is a property that returns a string containing the netBIOS name of the computer:

http://msdn.microsoft.com/en-us/library/system.environment.machinename.aspx

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From source

Four ways to get your local network/machine name:

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

More information at: Difference between SystemInformation.ComputerName, Environment.MachineName, and Net.Dns.GetHostName

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If you want the FQDN (fully qualified domain name) of the local computer, you can use

System.Net.Dns.GetHostEntry("localhost").HostName

The other methods will only return the local name, without any domain specific info. For instance, for the computer myComp.myDomain.com, the previous methods will return myComp, whereas the GetHostEntry method will return myComp.myDomain.com

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My computer name is more than 15 chars, so i use hostname.exe to get full length name:

Process proc = new Process();
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.RedirectStandardOutput = true;
proc.StartInfo.FileName = "c:/windows/system32/hostname.exe";
proc.Start();
var hostName = proc.StandardOutput.ReadLine();