Save List in BinaryFormat

Hi everyone,

I already asked this in the past, none of the answers were great and I ended up using Hashtables, which I managed to serialize and save. However, Hashtables does not allow same items with same key, and I need a list for that. I tried the code below but it gives me an error. Could someone please help me with this?

Error; SerializationException: Type UnityEngine.MonoBehaviour in assembly UnityEngine, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null is not marked as serializable. System.Runtime.Serialization.FormatterServices.GetSerializableMembers (System.Type type, StreamingContext context) (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System.Runtime.Serialization/FormatterServices.cs:101)

 using UnityEngine;
 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 using System.Runtime.Serialization.Formatters.Binary;
 using System.Runtime.Serialization;
 using System.IO;
 
 
 [System.Serializable]
 
 public class ListSave : MonoBehaviour 
 {
     
     string name;
     string value;
 
     void Start ()
     {
 
     }
     
     void Update ()
     {
         //    Debug.Log (UnityEngine.Random.Range (minValue, maxValue));
         
         if (Input.GetKeyDown(KeyCode.H))
         {
             Serial();
             Debug.Log ("Ser");
             
         }
         
         if (Input.GetKeyDown(KeyCode.L))
         {
             Deserialize();
             
         }
     }
     [SerializeField]
     public ListSave ( string newName, string newValue)
     {
         name = newName;
         value = newValue;
 
     }
 
     
     public static void Serial ()
     {
         // Create a hashtable of values that will eventually be serialized.
         List <ListSave> addresses = new List<ListSave> ();
         
 
     addresses.Add ( new ListSave ("Chest",     "Sword"));
     addresses.Add ( new ListSave("Chest", "Shield"));
     addresses.Add ( new ListSave("Chest1", "Shield"));
 
 
         foreach (ListSave de in addresses) 
         {
             
             print (de.name + de.value );
         }
   
         // you must first open a stream for writing.  
         // In this case, use a file stream.
         FileStream fs = new FileStream("DataFile.dat", FileMode.Create);
         
         // Construct a BinaryFormatter and use it to serialize the data to the stream.
     //    BinaryFormatter formatter = new BinaryFormatter();
         try 
         {
             new BinaryFormatter().Serialize (fs, addresses);
     //        formatter.Serialize(fs, addresses);
         }
         catch (SerializationException e) 
         {
             Debug.Log ("Failed to serialize. Reason: " + e.Message);
             throw;
         }
         finally 
         {
             fs.Close();
         }
         
 
     }
 
     
     static void Deserialize() 
     {
         
         //whatever code,
 
     }
 }

Thank you in advance,