Need Help Please............

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace JustMe
{
    [Serializable]
   public class FITS
    {
        
        static List<Fitness> fitness;
        
        static FITS()
        {
            fitness = new List<Fitness>();
        }
        
        public void  AddFitness(Fitness addF)
        {
            
            for (int i = 0; i < fitness.Count; i++)
            {
                if (fitness[i].Id.Equals(addF.Id) == true)
                {
                    ExceptionHandler error = new ExceptionHandler(addF.Id);
                    throw (error);
                }

            }
          
            fitness.Add(addF);

        }
        
        public  void DeleteFitness(Fitness deleteF)
        {
            fitness.Remove(deleteF);
        }

        
        public  void SelectSort()
        {
            
            int smallest;

            for (int i = 0; i < fitness.Count - 1; i++)
            {
                smallest = i;
                
                for (int index = i + 1; index < fitness.Count; index++)
                {

                    if (fitness[index].Id.CompareTo(fitness[smallest].Id) < 0)
                    {
                        smallest = index;
                    }
                }
                
                var temp = fitness[i];
                fitness[i] = fitness[smallest];
                fitness[smallest] = temp;

            }

        }
        
        public  void SelectSort1()
        {
            
            int smallest1;

            for (int i = 0; i < fitness.Count - 1; i++)
            {
                smallest1 = i;
                
                for (int index1 = i + 1; index1 < fitness.Count; index1++)
                {

                    if (fitness[smallest1].Id.CompareTo(fitness[index1].Id) < 0)
                    {
                        smallest1 = index1;
                    }
                }
                
                var temp1 = fitness[i];
                fitness[i] = fitness[smallest1];
                fitness[smallest1] = temp1;

            }

        }

        public  void clear()
        {
            fitness.Clear();
        }

        public Fitness getFitnessClass(int index)
        {
            return fitness[index];
        }

        public  int Count()
        {
            return fitness.Count;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization;

namespace JustMe
{
   public class SerialiseHandler
    {
        public void WriteListToFile(string filePath)
        {
            FileStream outFile;
            BinaryFormatter bFormatter = new BinaryFormatter();
            string newpath = HttpContext.Current.Server.MapPath(filePath);
            
            outFile = new FileStream(newpath, FileMode.Create, FileAccess.Write);

            
            bFormatter.Serialize(outFile, FITS.GetValues());

            
            outFile.Close();
        }

       
        public FITS ReadListFromFile(String filePath)
        {
            FileStream inFile;
            BinaryFormatter bFormatter = new BinaryFormatter();
            FITS fits = new FITS();
            string newpath = HttpContext.Current.Server.MapPath(filePath);
            
            inFile = new FileStream(newpath, FileMode.Open, FileAccess.Read);

            
            fits = (FITS)bFormatter.Deserialize(inFile);

            inFile.Close();
            return fits;
        }
    }
}