C# list 篩選FindAll

例如：參數a、list b、ModelId；根據ModelId參數進行篩選

  /// <summary>
        /// 根據ModelId篩選查詢出對應的數據
        /// </summary>
        /// <param name="list"></param>
        /// <param name="ModelId"></param>
        /// <returns></returns>
        private List<GetSellerOrdersRealItemsParms> selectList(List<GetSellerOrdersRealItemsParms> list, int ModelId)
        {
            if (ModelId != 0)
            {
                return list.FindAll(delegate(GetSellerOrdersRealItemsParms info)
                {
                    if (info.ModelId == ModelId)
                    {
                        return true;
                    }
                    else
                    {
                        return false;
                    }
                });
            }
            else
            {
                return list.FindAll(delegate(GetSellerOrdersRealItemsParms info)
                {
                    return true;
                });
            }
        }

調用代碼：

  List<GetSellerOrdersRealItemsParms> list_GetSellerOrdersRealItemsParms = new List<GetSellerOrdersRealItemsParms>();
  list_GetSellerOrdersRealItemsParms = selectList(list, request.ModelId);