包含数字作为值的枚举 [英] Enum containing numbers as values

问题描述

你好，

是否可以通过某种方式定义一个包含数字的枚举数?例如:

Hello,

Is it somehow possible to define an enumerator that contains numbers, too?. For example:

enum Juncture : int
{
    any,
    69,
    1850,
    contemporary,
    2056,
    Netherworld
}

将它们放在方括号中不起作用.我想使用此枚举器通过IsDefined()验证年龄输入.

感谢您的阅读，

Stefan

Putting them in brackets doesn''t work. I want to use this enumerator for validating input of ages using IsDefined().

Thanks for reading,

Stefan

推荐答案

编号
枚举的所有成员必须是有效的C#变量名.这意味着它们不能以数字开头，也不能包含空格，"+"，=-"等.

No.
All members of an enum must be valid C# variable names. That means they can''t start with a number, and can''t contain a space, ''+'', =-'', etc.

您不能去做.就像命名变量123一样.标识符不能以数字开头(如1abc)，但可以包含数字(如a123).它也不能包含空格.

但是，您可以为它们分配任意序数值:

You can''t do that. That would be like naming a variable 123. An identifier cannot start with a number (as in 1abc), but it can contain numbers (as in a123). It can''t contain spaces either.

HOWEVER, you can assign them any ordinal value you''d like:

enum Juncture { Any=0, SixtyNine=69, ReallyOld=100 };

在半相关的注释上，您可能还会发现此技巧/窍门可用:

从有问题的数据源(对于C#和VB)设置枚举器 [ ^ ]

On a semi-related note, you might also find this tip/trick usable:

Setting Enumerators From Questionable Data Sources (for C# and VB)[^]

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