枚举扩展方法获取枚举Description

枚举扩展方法

  /// <summary>
         /// 扩展方法，获得枚举的Description
         /// </summary>
         /// <param name="value">枚举值</param>
         /// <param name="nameInstend">当枚举没有定义DescriptionAttribute,是否用枚举名代替，默认使用</param>
         /// <returns>枚举的Description</returns>
         public static string GetDescription(this Enum value, bool nameInstend = true)
         {
             Type type = value.GetType();
             string name = Enum.GetName(type, value);
             if (name==null)
             {
                 return null;
             }
             FieldInfo field = type.GetField(name);
             DescriptionAttribute attribute = Attribute.GetCustomAttribute(field, typeof(DescriptionAttribute)) as DescriptionAttribute;
             if (attribute==null&&nameInstend==true)
             {
                 return name;
             }
             return attribute==null? null :attribute.Description;
         }

枚举类

  public enum WeekDay
     {
         [Description("星期一")]
         one=,
         [Description("星期二")]
         two =,
         three=,
         four=,
         five=,
         six=,
         seven=

     }

测试

           //枚举测试
            WeekDay w1 = WeekDay.one;
            string strw1 = w1.GetDescription();// strw1= “星期一”

            WeekDay w3 = WeekDay.three;
            string strw2 = w3.GetDescription();// strw3=“three”