自定义特性的使用--扩展enum的使用

1、建立自定义特性

 public class RemarkAttribute : Attribute
    {
        public RemarkAttribute(string remark)
        {
            _Remark = remark;
        }

        private string _Remark;

        public string Remark
        {
            get
            {
                return _Remark;
            }
        }
    }

2、建立enum

  public enum UserState
    {
        /// 

        /// 正常
        /// 
        [Remark("正常")]
        Normal = 0,
        /// 

        /// 冻结
        /// 
        [Remark("Frozen")]
        Frozen = 1,
        /// 

        /// 删除
        /// 
        [Remark("删除")]
        Delete = 2
    }

3、建立Enum扩展

    public static class RemarkExtend
    {
        public static string GetRemark(this Enum eValue)
        {
            Type type = eValue.GetType();
            FieldInfo field = type.GetField(eValue.ToString());
            RemarkAttribute remarkAttribute = (RemarkAttribute)field.GetCustomAttribute(typeof(RemarkAttribute));
            return remarkAttribute.Remark;


        }
    }

4、直接使用自定义特性

 UserState state = UserState.Normal;
 string result= state.GetRemark();