.net工具类 获取枚举类型的描述

 ???/// <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();