How to write a C# class?

Question

C++ / C#

public static class ParsBase
    {
        List<HostInfo> hostInfo = new List<HostInfo>();
        public struct HostInfo
        {   
            public string ip, mac;
            public List<PortInfo> ports;
            public struct PortInfo
            {
                public string nameport;
                public int num;
                public bool isOpen;
                public bool isFiltered;
            }

        }
    }

Can't see it in other functions.

Answer 1

Public List<HostInfo> hostInfo?