Help ConquerItemInformation

private void getPlusInformation(uint ID, byte Plus)
        {
            var itemtype = ID;
            var type = GetItemType(ID);
            var sort = GetItemSort(ID);
            if (type == ItemType.Backsword || type == ItemType.Bow)
            {
            }
            else if (sort == ItemSort.Weapon1)
            {
                itemtype = (itemtype / 100000) * 100000 + (itemtype % 1000) + 44000;
            }
            else if (sort == ItemSort.Weapon2)
            {
                itemtype = (itemtype / 100000) * 100000 + (itemtype % 1000) + 55000;
            }
            else if (sort == ItemSort.Helmet || sort == ItemSort.Armor || sort == ItemSort.Shield)
            {
                itemtype = (itemtype / 1000) * 1000 + (itemtype % 1000);
            }

            itemtype = itemtype / 10 * 10;

             byte itemType = (byte)(ID / 10000);
             ushort itemType2 = (ushort)(ID / 1000);
             if (itemType == 14 && itemType2 != 143 && itemType2 != 142 && itemType2 != 141)//armors
             {
                 ID = (uint)(
                             (((uint)(ID / 1000)) * 1000) + // [3] = 0
                             ((ID % 100))
                         );
             }
             else if (itemType2 == 141 || itemType2 == 142 || itemType2 == 143 || itemType == 13 || itemType == 11 || itemType2 == 123 || itemType == 30 || itemType == 20 || itemType == 12 || itemType == 15 || itemType == 16 || itemType == 50 || itemType2 == 421 || itemType2 == 601 || itemType2 == 610 || itemType == 90)//Necky bow bag
             {
                 ID = (uint)(
                             ID - (ID % 10) // [5] = 0
                         );
             }
             else
             {
                 byte head = (byte)(ID / 100000);
                 ID = (uint)(
                         ((head * 100000) + (head * 10000) + (head * 1000)) + // [1] = [0], [2] = [0]
                         ((ID % 1000) - (ID % 10)) // [5] = 0
                     );
             }

            _PlusInformation = new ConquerItemPlusInformation();
            if (Plus > 0)
            {
                SafeDictionary<byte, ConquerItemPlusInformation> pInfo = null;
                if (!PlusInformations.TryGetValue(itemtype, out pInfo))
                    PlusInformations.TryGetValue(ID, out pInfo);
                if (pInfo == null)
                    if (!pInfo.TryGetValue(Plus, out _PlusInformation))
                        _PlusInformation = new ConquerItemPlusInformation();
            }
        }