How to select an Game Object from an Item List

I have an inventory system that uses a list to create icons and all, but I want the icons to represent the game objects listed in an array. I want to be able to click on the icon and drag out a game object representing that item in the inventory list. C Sharp only

here is the code for the items: using UnityEngine; using System.Collections;

 [System.Serializable]
 public class item {
     public string itemName;
     public int itemID;
     public string itemDisc;
     public Texture2D icon;
 
 
     public item(string name, int id, string desc){
         itemName = name;
         itemID = id;
         itemDisc = desc;
         icon = Resources.Load<Texture2D> ("Icons/" + name);
 
     }
     public item(){
 
         }
 
 }

and here is the code for the inventory that I am working with:

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 
 public class Inventory : MonoBehaviour {
     public int slotsX, slotsY;
     public List<item> inventory = new List<item>();
     public List<item> slots = new List<item>();
     private bool showInventory;
     private itemDatabase database;
     private bool showToolTip;
     private string toolTip;
     private bool dragItem;
     private item draggedItem;
     public GameObject[] items;
     private itemPlacement ItemPlacement;
 
     // Use this for initialization
     void Start () {
         ItemPlacement = GetComponent<itemPlacement> ();
         for(int i = 0; i < (slotsX * slotsY); i++){
             slots.Add(new item());
             inventory.Add (new item());
         }
         database = GameObject.FindGameObjectWithTag ("Item Database").GetComponent<itemDatabase> ();
         addItem (0);
         addItem (1);
         addItem (2);
         addItem (3);
 
     }
     void Update(){
         if(Input.GetButtonDown("Inventory Menu"))
            {
             showInventory = !showInventory;
         }
     }
     
     // Update is called once per frame
     void OnGUI () {
         toolTip = "";
         if(showInventory)
         {
             drawInventory ();
         }
         if (showToolTip){
             GUI.Box (new Rect(Event.current.mousePosition.x, Event.current.mousePosition.y, 200, 50),toolTip);
 
             }
         if (dragItem){
             GUI.DrawTexture (new Rect(Event.current.mousePosition.x, Event.current.mousePosition.y, 50, 50),draggedItem.icon);
         }
 
     }
     void drawInventory(){
         Event e = Event.current;
         int i = 0;
         for (int x = 0; x < slotsX; x++) {
             for (int y = 0; y < slotsY; y++) {
                 Rect slotRect = new Rect (x * 60, y * 60, 60, 60);
                 slots [i] = inventory [i];
                 if (slots [i].itemName != null) {
                     GUI.DrawTexture (slotRect, slots [i].icon);
                     if (slotRect.Contains (Event.current.mousePosition)) {
                         toolTip = createToolTip (slots [i]);
                         showToolTip = true;
                         if (e.button == 0 && e.type == EventType.MouseDrag && !dragItem) {
                             dragItem = true;
                             draggedItem = slots [i];
                         }
                     }
                     for (int g = 0; g <items.Length; g++) {
                         if (e.type == EventType.mouseUp && dragItem) {
                             dragItem = false;
                             draggedItem = null;
                             g = slots[i].itemID;
                             ItemPlacement.SetItem (items [g]);
                         }
                     }
 
                     if (toolTip == "") {
                         showToolTip = false;
                     }
                     i++;
                 }
             }
         }
     }
     
     string createToolTip (item Item){
         toolTip = Item.itemName +  "\n" + Item.itemDisc;
         return toolTip; 
     }
 
     void removeItem(int id){
         for (int i = 0; i < inventory.Count; i++){
             if (inventory [i].itemID == id){
                 inventory[i] = new item();
                     break;
             }
         }
     }
     void addItem(int id){
         for (int i = 0; i < inventory.Count; i++) {
             if (inventory [i].itemName == null) {
                 inventory [i] = database.items[id];
                 break;
             }
         }
     }
 
 }