public void RefreshOnItemButonClick(StorageDataItemBase item)
        {
            KeyValuePair <System.Type, int> keyByItem = this.GetKeyByItem(item);

            if (this._selectedItemMap.ContainsKey(keyByItem))
            {
                if (this._isMulti)
                {
                    this._modifyingItem = this._selectedItemMap[keyByItem];
                    this.OnIncreaseBtnClick();
                }
                else
                {
                    this._selectedItemList.Remove(this._selectedItemMap[keyByItem]);
                    this._selectedItemMap.Remove(keyByItem);
                }
            }
            else if (this._selectedItemMap.Count < 6)
            {
                StorageDataItemBase base2 = item.Clone();
                base2.number = 1;
                this._selectedItemList.Add(base2);
                this._selectedItemMap.Add(keyByItem, base2);
                if (this._isMulti)
                {
                    this._modifyingItem = base2;
                }
            }
            this.UpdateDataView();
        }