C# Enum Name String Description之间的相互转换

最近工作中经常用到Enum中Value、String、Description之间的相互转换，特此总结一下。

1.首先定义Enum对象

 public enum Weekday
         {
             [Description("星期一")]
             Monday=,
             [Description("星期二")]
             Tuesday=,
             [Description("星期三")]
             Wednesday=,
             [Description("星期四")]
             Thursday=,
             [Description("星期五")]
             Friday=,
             [Description("星期六")]
             Saturday=,
             [Description("星期日")]
             Sunday=
         }

2.根据string类型的值，获取相应的对象，例如：“Sunday”获取Weekday.Sunday.

 public static Weekday GetEnumFromString(string str)
         {
             Weekday week;
             bool b = Enum.TryParse(str, true, out week);
             if (b)
                 return week;
             else
                 throw new Exception("没有找到对应的Enum");
         }

3.根据Value类型的值，获取对应的description。

 public static String GetEnumDescription(Weekday week)
         {

             FieldInfo field = week.GetType().GetField(week.ToString());
             object[] obj = field.GetCustomAttributes(typeof(DescriptionAttribute), false);
             DescriptionAttribute da;
             if (obj != null && obj.Length > )
             {
                 da = (System.ComponentModel.DescriptionAttribute)obj[];
                 return da.Description;
             }
             else
                 throw new Exception("没有找到对应的Description");
         }

4.根据Description的值，获取对应的Value。

  public static Weekday GetEnumFromDescription(string description)
         {
             foreach(Weekday week in Enum.GetValues(typeof(Weekday)))
             {
                 if (description.Equals(GetEnumDescription(week))==true)
                     return week;
             }
             throw new Exception("没有找到对应的Enum");
         }