枚举可用来存储字符串与数字的值对,相当于一个对照表
常用方法:GetName(),GetValue(),Parse()
1 using System;
2
3 public class EnumTest {
4 enum Days { Saturday, Sunday, Monday, Tuesday, Wednesday, Thursday, Friday };
5 enum BoilingPoints { Celcius = 100, Fahrenheit = 212 };
6 [FlagsAttribute]
7 enum Colors { Red = 1, Green = 2, Blue = 4, Yellow = 8 };
8
9 public static void Main() {
10
11 Type weekdays = typeof(Days);
12 Type boiling = typeof(BoilingPoints);
13
14 Console.WriteLine("The days of the week, and their corresponding values in the Days Enum are:");
15
16 foreach ( string s in Enum.GetNames(weekdays) )
17 Console.WriteLine( "{0,-11}= {1}", s, Enum.Format( weekdays, Enum.Parse(weekdays, s), "d"));
18
19 Console.WriteLine();
20 Console.WriteLine("Enums can also be created which have values that represent some meaningful amount.");
21 Console.WriteLine("The BoilingPoints Enum defines the following items, and corresponding values:");
22
23 foreach ( string s in Enum.GetNames(boiling) )
24 Console.WriteLine( "{0,-11}= {1}", s, Enum.Format(boiling, Enum.Parse(boiling, s), "d"));
25
26 Colors myColors = Colors.Red | Colors.Blue | Colors.Yellow;
27 Console.WriteLine();
28 Console.WriteLine("myColors holds a combination of colors. Namely: {0}", myColors);
29 }
30 }
31
32
2
3 public class EnumTest {
4 enum Days { Saturday, Sunday, Monday, Tuesday, Wednesday, Thursday, Friday };
5 enum BoilingPoints { Celcius = 100, Fahrenheit = 212 };
6 [FlagsAttribute]
7 enum Colors { Red = 1, Green = 2, Blue = 4, Yellow = 8 };
8
9 public static void Main() {
10
11 Type weekdays = typeof(Days);
12 Type boiling = typeof(BoilingPoints);
13
14 Console.WriteLine("The days of the week, and their corresponding values in the Days Enum are:");
15
16 foreach ( string s in Enum.GetNames(weekdays) )
17 Console.WriteLine( "{0,-11}= {1}", s, Enum.Format( weekdays, Enum.Parse(weekdays, s), "d"));
18
19 Console.WriteLine();
20 Console.WriteLine("Enums can also be created which have values that represent some meaningful amount.");
21 Console.WriteLine("The BoilingPoints Enum defines the following items, and corresponding values:");
22
23 foreach ( string s in Enum.GetNames(boiling) )
24 Console.WriteLine( "{0,-11}= {1}", s, Enum.Format(boiling, Enum.Parse(boiling, s), "d"));
25
26 Colors myColors = Colors.Red | Colors.Blue | Colors.Yellow;
27 Console.WriteLine();
28 Console.WriteLine("myColors holds a combination of colors. Namely: {0}", myColors);
29 }
30 }
31
32