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c#.netip-address

How to get the IP address of a machine in C#


How do I get the IP address of a machine in C#?


Solution

  • IPAddress[] localIPs = Dns.GetHostAddresses(Dns.GetHostName());
    

    Your machine doesn't have a single IP address, and some of the returned addresses can be IPv6.

    MSDN links:

    Alternatively, as MSalters mentioned, 127.0.0.1 / ::1 is the loopback address and will always refer to the local machine. For obvious reasons, however, it cannot be used to connect to the local machine from a remote machine.