fBaseXtensions.Game.Hero.Backpack.UpdateItemList C# (CSharp) Method

        public static void UpdateItemList()
        {
            List<int> SeenACDGuid = new List<int>();

            //Clear New Item List
            NewItemList.Clear();

            using (ZetaDia.Memory.AcquireFrame())
            {
                foreach (var thisitem in ZetaDia.Me.Inventory.Backpack)
                {
                    var ACDGuid = thisitem.ACDGuid;
                    SeenACDGuid.Add(ACDGuid);

                    if (CacheItemList.ContainsKey(ACDGuid))
                    {
                        var cachedItem = CacheItemList[ACDGuid];

                        //Stackable item that increased
                        if (CacheItemList[ACDGuid].IsStackableItem)
                        {
                            try
                            {
                                if (cachedItem.ThisItemStackQuantity != thisitem.ItemStackQuantity)
                                {
                                    //Update it..
                                    cachedItem.ThisItemStackQuantity = thisitem.ItemStackQuantity;

                                    //Check if stack quanity is maxed to remove it from our list
                                    if (cachedItem.ThisItemStackQuantity >= cachedItem.MaxStackQuanity &&
                                        _stackableItems.Contains(cachedItem.SNO))
                                        _stackableItems.Remove(cachedItem.SNO);

                                    //Add it to new item list..
                                    NewItemList.Add(CacheItemList[ACDGuid]);
                                }
                            }
                            catch (Exception ex)
                            {
                                //Logger.DBLog.DebugFormat("Item {0} stack quanity threw exception {1}",
                                    //CacheItemList[ACDGuid].ThisInternalName, ex.Message);
                            }
                        }

                        continue;
                    }

                    var thiscacheditem = new CacheACDItem(thisitem);
                    CacheItemList.Add(thiscacheditem.ACDGUID, thiscacheditem);

                    //Add it to new item list..
                    NewItemList.Add(thiscacheditem);

                    //
                    _occupiedSlots += thiscacheditem.IsTwoSlot ? 2 : 1;
                    if (thiscacheditem.IsStackableItem &&
                        thiscacheditem.ThisItemStackQuantity < thiscacheditem.MaxStackQuanity &&
                        !_stackableItems.Contains(thiscacheditem.SNO))
                        _stackableItems.Add(thiscacheditem.SNO);

                    if (thiscacheditem.invCol >= 0 && thiscacheditem.invCol <= 9 && thiscacheditem.invRow >= 0 &&
                        thiscacheditem.invRow <= 5)
                    {
                        _backpackslotblocked[thiscacheditem.invCol, thiscacheditem.invRow] = true;
                        if (thiscacheditem.IsTwoSlot)
                            _backpackslotblocked[thiscacheditem.invCol, thiscacheditem.invRow + 1] = true;
                    }
                }
            }

            //Trim away items missing..
            var UnseenACDGuids = CacheItemList.Keys.Where(k => !SeenACDGuid.Contains(k)).ToList();
            foreach (var unseenAcdguiD in UnseenACDGuids)
            {
                var item = CacheItemList[unseenAcdguiD];

                if (item.IsStackableItem && _stackableItems.Contains(item.SNO))
                    _stackableItems.Remove(item.SNO);

                _occupiedSlots -= item.IsTwoSlot ? 2 : 1;
                _backpackslotblocked[item.invCol, item.invRow] = false;
                if (item.IsTwoSlot)
                    _backpackslotblocked[item.invCol, item.invRow + 1] = false;

                CacheItemList.Remove(unseenAcdguiD);
            }
        }