Attribute 扩展应用

public static string ToDescription(this Enum enumeration)
    {   
        Type type = enumeration.GetType();
        MemberInfo[] memInfo = type.GetMember(enumeration.ToString());
        if (null != memInfo && memInfo.Length > 0)
        {
            object[] attrs = memInfo[0].GetCustomAttributes(typeof(DescriptionAttribute), false);
            if (null != attrs && attrs.Length > 0)                
                return ((DescriptionAttribute)attrs[0]).Description; 
        }
        return enumeration.ToString();
    }

public enum AssessmentAnswer
{
[DescriptionAttribute("强烈的反对")]
Strongly_Disagree = 1,

    [DescriptionAttribute("反对")]
    Disagree = 2,
    Neutral = 3,
    Agree = 4,
    [DescriptionAttribute("完全的同意")]
    Strongly_Agree = 5
}

当要获取描述语句时, 你可以轻松的调用ToDescription :
 
//返回 "强烈的反对"
AssessmentAnswer.Strongly_Disagree.ToDescription()
 
注意, 如果没有给元素加入特性, 你仍旧可以使用ToDescription, 可以参考上面的代码看看是为什么.
//返回 “Disagree”
AssessmentAnswer.Disagree.ToDescription()

代码来源于博客园，自己整理待用！