C# .NET 获取枚举值的自定义属性

一、定义一个类

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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Reflection;   namespace XXX.XXX.Utils {     /// <summary>     /// 备注特性     /// </summary>     public class DescAttribute : Attribute     {         private string m_desc;         public DescAttribute(string desc)         {             this.m_desc = desc;         }         /// <summary>         /// 备注         /// </summary>         public string Desc         {             get { return m_desc; }             set { m_desc = value; }         }         /// <summary>         /// 获取枚举的备注信息         /// </summary>         /// <param name="val">枚举值</param>         /// <returns></returns>         public static string GetEnumDesc(Enum val)         {             Type type = val.GetType();             FieldInfo fd = type.GetField(val.ToString());             if (fd == null)                 return string.Empty;             object[] attrs = fd.GetCustomAttributes(typeof(DescAttribute), false);             string name = string.Empty;             foreach (DescAttribute attr in attrs)             {                 name = attr.Desc;             }             return name;         }     }     /// <summary>     /// 枚举扩展类     /// </summary>     public static class EnumExtension     {         /// <summary>         /// 获取枚举的备注信息         /// </summary>         /// <param name="em"></param>         /// <returns></returns>         public static string GetDesc(this Enum em)         {             Type type = em.GetType();             FieldInfo fd = type.GetField(em.ToString());             if (fd == null)                 return string.Empty;             object[] attrs = fd.GetCustomAttributes(typeof(DescAttribute), false);             string name = string.Empty;             foreach (DescAttribute attr in attrs)             {                 name = attr.Desc;             }             return name;         }     } }

　

二、定义一个枚举，并引用如上命名空间

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public enum EnumCalculationTag {         [Desc("This is description")]         A }

　　

三、获取注解（需引用“一”中的命名空间）

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1	EnumCalculationTag.A.GetDesc()