C#的隐式枚举转换

隐式枚举转换允许把十进制整数0 转换成任何枚举类型，对应其它的整数则不存在这种隐式转换，下面用一个例子来具体说明本问题:

using System;
        enum Weekday{
                Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday
       };

class Test
       {
               public static void Main() 
               {
                       Weekday day;
                        day = 0;
                       Console.WriteLine(day);
               }
       }

程序的输出是 0

注意：把 day = 0 改写为 day = 1 编译器就会给出下面的错误：

Can not implictly convert type 'int' to type 'enum'

如果使用我们需要显示的转换 int x = (int)Weekday.Tuesday;  int y = (int)Weekday.Friday;

转载于:https://www.cnblogs.com/JuneZhang/archive/2011/11/21/2257340.html