C# 扩展方法
实例:通过扩展方法,获取枚举的描述特性
using System; using System.Collections.Generic; using System.ComponentModel; using System.Reflection; using System.Text; namespace ConsoleApp1 { public static class ExHelper { public static string GetD(this Enum enumValue) { string value = enumValue.ToString(); FieldInfo field = enumValue.GetType().GetField(value); object[] objs = field.GetCustomAttributes(typeof(DescriptionAttribute), false); //获取描述属性 if (objs == null || objs.Length == 0) //当描述属性没有时,直接返回名称 return value; DescriptionAttribute descriptionAttribute = (DescriptionAttribute)objs[0]; return descriptionAttribute.Description; } } public enum MySex { [Description("男")] male = 0, [Description("女")] female = 1 } }
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