由於對英文的天生缺陷，在枚舉時一直使用中文，這樣就不用看註釋就知道枚舉意思，今天看到博文
使用特性代替了直接使用中文作為屬性。刻意摘抄部分為以後使用方便
/// <summary>/// 枚举帮助类/// </summary>public static class EnumTools
{/// <summary>/// 获取当前枚举值的描述和排序/// </summary>/// <param name="value"></param>/// <returns>返回元组Tuple(string,int)</returns>public static Tuple<string,int> GetDescription(this Enum value)
{int order = 0;string description = string.Empty;
Type type = value.GetType();// 获取枚举FieldInfo fieldInfo = type.GetField(value.ToString());// 获取枚举自定义的特性DescriptionAttributeobject[] attrs = fieldInfo.GetCustomAttributes(typeof(DescriptionAttribute), false);
DescriptionAttribute attr = (DescriptionAttribute)attrs.FirstOrDefault(a => a is DescriptionAttribute);
description = fieldInfo.Name;if (attr != null)
{
order = attr.Order;
description = attr.Name;
}return new Tuple<string,int>(description,order);
}/// <summary>/// 获取当前枚举的所有描述/// </summary>/// <returns></returns>public static List<KeyValuePair<int, string>> GetAll<T>()
{return GetAll(typeof(T));
}/// <summary>/// 获取所有的枚举描述和值/// </summary>/// <param name="type"></param>/// <returns></returns>public static List<KeyValuePair<int, string>> GetAll(Type type)
{
List<EnumToolsModel> list = new List<EnumToolsModel>();// 循环枚举获取所有的Fieldsforeach (var field in type.GetFields())
{// 如果是枚举类型if (field.FieldType.IsEnum)
{object tmp = field.GetValue(null);
Enum enumValue = (Enum)tmp;int intValue = Convert.ToInt32(enumValue);var dec = enumValue.GetDescription();int order= dec.Item2;string showName = dec.Item1; // 获取描述和排序list.Add(new EnumToolsModel { Key = intValue, Name = showName, Order = order });
}
}// 排序并转成KeyValue返回return list.OrderBy(i => i.Order).Select(i => new KeyValuePair<int, string>(i.Key, i.Name)).ToList();
}/// <summary>/// 枚举Model/// </summary> partial class EnumToolsModel
{public int Order { get; set; }public string Name { get; set; }public int Key { get; set; }
}
}/// <summary>/// 枚举特性/// </summary>[AttributeUsage(AttributeTargets.Field, AllowMultiple = false, Inherited = false)]public class DescriptionAttribute : Attribute
{/// <summary>/// 排序/// </summary>public int Order { get; set; }/// <summary>/// 名称/// </summary>public string Name { get; set; }/// <summary>/// 定义描述名称/// </summary>/// <param name="name">名称</param>public DescriptionAttribute(string name)
{
Name = name;
}/// <summary>/// 定义描述名称和排序/// </summary>/// <param name="name">名称</param>/// <param name="order">排序</param>public DescriptionAttribute(string name, int order)
{
Name = name;
Order = order;
}
}登入後複製
把原文中的out參數替換成回傳元組，由於專案是vs2015開發，不能用c#7.0特性，否則用7.0中的值元組應該更好一點。性能和顯示友好性都會有改進。
以上是Enum擴充特性實例程式碼的詳細內容。更多資訊請關注PHP中文網其他相關文章！
