Devexpress 明细报表

    public class InOrder
    {
        public String Title { get; set; }
        public String EmpNo { get; set; }
        public List<InOrderItem> Items { get; set; }
        public decimal? GroupSum
        {
            get
            {
                return Items.Sum(ent => ent.Amount);
            }
        }
        public InOrder()
        {
            Items = new List<InOrderItem>();
        }
    }
    public class InOrderItem
    {
        public long? Id { get; set; }
        public decimal? Amount { get; set; }
        public String Name { get; set; }
    }

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