/// <summary>

    /// 枚举扩展类

    /// </summary>

    public static class EnumExtension

    {

        /// <summary>

        /// 获取枚举的描述，需要DescriptionAttribute属性

        /// </summary>

        /// <param name="e"></param>

        /// <returns></returns>

        public static string GetDescription(this Enum e)

        {

            //获取枚举的Type类型对象

            var type = e.GetType();

            //获取枚举的所有字段

            var fields = type.GetFields();

            //遍历所有枚举的所有字段

            foreach (var field in fields)

            {

                if (field.Name != e.ToString())

                {

                    continue;

                }

                //第二个参数true表示查找EnumDisplayNameAttribute的继承链

                if (field.IsDefined(typeof(DescriptionAttribute), true))

                {

                    var attr = field.GetCustomAttribute(typeof(DescriptionAttribute), false) as DescriptionAttribute;

                    if (attr != null)

                    {

                        return attr.Description;

                    }

                }

            }

            //如果没有找到自定义属性，直接返回属性项的名称

            return e.ToString();

        }

        /// <summary>

        /// 根据枚举获取下拉框列表

        /// </summary>

        /// <param name="en"></param>

        /// <returns></returns>

        public static List<ComboboxItemDto> GetSelectList(this Enum en)

        {

            var list = new List<ComboboxItemDto>();

            foreach (var e in Enum.GetValues(en.GetType()))

            {

                list.Add(new ComboboxItemDto() { DisplayText = GetDescription(e as Enum), Value = ((int)e).ToString(), IsSelected = e == en });

            }

            return list;

        }

        /// <summary>

        /// 根据枚举获取下拉框列表

        /// </summary>

        /// <param name="type">枚举类型</param>

        /// <returns></returns>

        public static List<ComboboxItemDto> GetSelectList(this Type type)

        {

            var list = new List<ComboboxItemDto>();

            foreach (var e in Enum.GetValues(type))

            {

                list.Add(new ComboboxItemDto() { DisplayText = GetDescription(e as Enum), Value = ((int)e).ToString() });

            }

            return list;

        }

    }

    //

    // 摘要:

    //     This DTO can be used as a simple item for a combobox/list.

    public class ComboboxItemDto

    {

        //

        // 摘要:

        //     Creates a new Abp.Application.Services.Dto.ComboboxItemDto.

        public ComboboxItemDto();

        //

        // 摘要:

        //     Creates a new Abp.Application.Services.Dto.ComboboxItemDto.

        //

        // 参数:

        //   value:

        //     Value of the item

        //

        //   displayText:

        //     Display text of the item

        public ComboboxItemDto(string value, string displayText);

        //

        // 摘要:

        //     Value of the item.

        public string Value { get; set; }

        //

        // 摘要:

        //     Display text of the item.

        public string DisplayText { get; set; }

        //

        // 摘要:

        //     Is selected?

        public bool IsSelected { get; set; }

    }

    /// <summary>

    /// 商品订单状态

    /// </summary>

    public enum CommodityOrderState

    {

        /// <summary>

        /// 待付款

        /// </summary>

        [Description("待付款")]

        PendingPay,

        /// <summary>

        /// 待发货

        /// </summary>

        [Description("待发货")]

        PendingShip,

        /// <summary>

        /// 待收货

        /// </summary>

        [Description("待收货")]

        PendingReceipt,

        /// <summary>

        /// 待评价

        /// </summary>

        [Description("待评价")]

        PendingEvaluation,

        /// <summary>

        /// 已评价

        /// </summary>

        [Description("已评价")]

        Evaluated,

        /// <summary>

        /// 已退款

        /// </summary>

        [Description("已退款")]

        Refunded = 100

    }

        /// <summary>

        /// 订单状态（这个字段会通过AutoMapper自动映射）

        /// </summary>

        public CommodityOrderState State { get; set; }

        /// <summary>

        /// 订单状态描述

        /// </summary>

        public string StateDesc => State.GetDescription();