How to check if a TCP port is available for listening

gistfile1.cs

using System.Linq;
using System.Net;
using System.Net.NetworkInformation;
 
 
        public bool TcpPortIsAvailableForListening(int port)
        {
            IPGlobalProperties ipGlobalProperties = IPGlobalProperties.GetIPGlobalProperties();
            IPEndPoint[] tcpEndPointArray = ipGlobalProperties.GetActiveTcpListeners();
            var isUnavailable = tcpEndPointArray.Any(endPoint => endPoint.Port == port);
            return !isUnavailable;
        }