How do I...get the arraylist values in the client class from object class using .net remoting

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C#

I am using C# .net remoting and am trying to store xml data in an arraylist and call the method in the client class.
When i try to execute my code i get message saying: object reference not set to an instance of an object.

Here is my code: (Object Class)

using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.Collections;

namespace UseXML
{
    public class UseXML : MarshalByRefObject
    {
        public ArrayList list()
        {
            ArrayList array = new ArrayList();
            try
            {
                XmlTextReader xReader = new XmlTextReader(@"../Games.xml");
                XmlDocument doc = new XmlDocument();
                doc.Load(xReader);

                XmlElement root = doc.DocumentElement;
                XmlNodeList list = root.SelectNodes("//Games/Game");

                
               
                foreach (XmlNode n in list)
                {
                    string sm = n["name"].InnerText + "\n" + n["amount"].InnerText;
                    array.Add(sm);
                }

                return array;
            }
            catch (Exception e)
            {
                return null;
                
            }
        }
    }
}

Server Class:

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;

namespace ServerClass
{
    class Program
    {
        static void Main(string[] args)
        {
            TcpChannel channel = new TcpChannel(1973);
            ChannelServices.RegisterChannel(channel, true);

            RemotingConfiguration.RegisterWellKnownServiceType(typeof(UseXML.UseXML), "UseXML", WellKnownObjectMode.SingleCall);

            Console.WriteLine("Server Running....");
        }
    }
}

Client class:

using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using UseXML;

namespace ClientClass
{
    class Program
    {
        static void Main(string[] args)
        {
            TcpChannel channel = new TcpChannel();
            ChannelServices.RegisterChannel(channel, true);

            Console.WriteLine("Welcome to games");
            Console.WriteLine();

            Console.WriteLine("[1] Display All games");
            Console.WriteLine("[2] Display select game");
            Console.WriteLine("[3] Exit");

            Console.WriteLine();
            Console.WriteLine("Enter your choice");
            int input = Int32.Parse(Console.ReadLine());

            UseXML.UseXML useX;

            try
            {
                useX = (UseXML.UseXML)Activator.GetObject(typeof(UseXML.UseXML), "tcp://localhost:8085/UseXML");
                useX = new UseXML.UseXML();


                ArrayList list = useX.list();
                
                
                while (input < 3)
                {
                    if (input == 1)
                    {
                        for (int i = 0; i < list.Count; i++)
                        {
                            Console.WriteLine(list[i]);
                        }
                    }
                    else if (input == 2)
                    {
                    }
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }
    }
}

When run the project and press 1, all the games in the xml file should be retrieved. Please help...