C#枚举

C#中的枚举也称为枚举。它用于存储一组命名常量,例如季节,天,月,大小等。枚举常量也称为枚举器。 C#中的枚举可以在类和结构内部或外部声明。
枚举常量的默认值从0开始,然后逐一递增。但是我们可以更改默认值。
要记住的要点

  • 枚举具有固定的常量集
  • 枚举可提高类型安全性
  • 枚举可以遍历
C#枚举示例
【C#枚举】让我们看一个简单的C#枚举示例。
using System; public class EnumExample { public enum Season { WINTER, SPRING, SUMMER, FALL }public static void Main() { int x = (int)Season.WINTER; int y = (int)Season.SUMMER; Console.WriteLine("WINTER = {0}", x); Console.WriteLine("SUMMER = {0}", y); } }

输出:
WINTER = 0 SUMMER = 2

C#枚举示例更改开始索引
using System; public class EnumExample { public enum Season { WINTER=10, SPRING, SUMMER, FALL }public static void Main() { int x = (int)Season.WINTER; int y = (int)Season.SUMMER; Console.WriteLine("WINTER = {0}", x); Console.WriteLine("SUMMER = {0}", y); } }

输出:
WINTER = 10 SUMMER = 12

Days的C#枚举示例
using System; public class EnumExample { public enum Days { Sun, Mon, Tue, Wed, Thu, Fri, Sat }; public static void Main() { int x = (int)Days.Sun; int y = (int)Days.Mon; int z = (int)Days.Sat; Console.WriteLine("Sun = {0}", x); Console.WriteLine("Mon = {0}", y); Console.WriteLine("Sat = {0}", z); } }

输出:
Sun = 0 Mon = 1 Sat = 6

C#枚举示例:使用getNames()遍历所有值
using System; public class EnumExample { public enum Days { Sun, Mon, Tue, Wed, Thu, Fri, Sat }; public static void Main() { foreach (string s in Enum.GetNames(typeof(Days))) { Console.WriteLine(s); } } }

输出:
Sun Mon Tue Wed Thu Fri Sat

C#枚举示例:使用getValues()遍历所有值
using System; public class EnumExample { public enum Days { Sun, Mon, Tue, Wed, Thu, Fri, Sat }; public static void Main() { foreach (Days d in Enum.GetValues(typeof(Days))) { Console.WriteLine(d); } } }

输出:
Sun Mon Tue Wed Thu Fri Sat

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