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

 1 public enum Weekday
 2         {
 3             [Description("星期一")]
 4             Monday=1,
 5             [Description("星期二")]
 6             Tuesday=2,
 7             [Description("星期三")]
 8             Wednesday=3,
 9             [Description("星期四")]
10             Thursday=4,
11             [Description("星期五")]
12             Friday=5,
13             [Description("星期六")]
14             Saturday=6,
15             [Description("星期日")]
16             Sunday=7
17         }

View Code

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

1 public static Weekday GetEnumFromString(string str)
2         {
3             Weekday week;
4             bool b = Enum.TryParse(str, true, out week);
5             if (b)
6                 return week;
7             else
8                 throw new Exception("没有找到对应的Enum");
9         }

View Code

3.根据Value类型的值，获取对应的description。

 1 public static String GetEnumDescription(Weekday week)
 2         {
 3 
 4             FieldInfo field = week.GetType().GetField(week.ToString());
 5             object[] obj = field.GetCustomAttributes(typeof(DescriptionAttribute), false);
 6             DescriptionAttribute da;
 7             if (obj != null && obj.Length > 0)
 8             {
 9                 da = (System.ComponentModel.DescriptionAttribute)obj[0];
10                 return da.Description;
11             }
12             else
13                 throw new Exception("没有找到对应的Description");
14         }

View Code

4.根据Description的值，获取对应的Value。

1  public static Weekday GetEnumFromDescription(string description)
2         {
3             foreach(Weekday week in Enum.GetValues(typeof(Weekday)))
4             {
5                 if (description.Equals(GetEnumDescription(week))==true)
6                     return week;
7             }
8             throw new Exception("没有找到对应的Enum");
9         }

View Code