GameFramework.ItemBag.GetItemNum C# (CSharp) Method

        public int GetItemNum(int item_id)
        {
            int nItemCount = 0;
            if (null == m_ItemData)
                return nItemCount;
            for (int i = 0; i < m_ItemData.Count; ++i) {
                if (m_ItemData[i].ItemId == item_id) {
                    nItemCount += m_ItemData[i].ItemNum;
                }
            }
            return nItemCount;
        }