C# 枚举中的空格
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Spaces in C# Enums
提问by cdmckay
Is there any way to put spaces in a C# enum constant? I've read that you can do it in VB by doing this:
有没有办法在 C# 枚举常量中放置空格？我读过你可以通过这样做在VB中做到这一点：
Public Enum EnumWithSpaces
ConstantWithoutSpaces
[Constant With Spaces]
End Enum
...and then access it like this:
...然后像这样访问它：
Public Sub UsingEnumWithSpaces()
Dim foo As EnumWithSpaces = EnumWithSpaces.[Constant With Spaces]
End Sub
That implies to me that the CLR can handle an enum with spaces.
这对我来说意味着 CLR 可以处理带有空格的枚举。
Is there any way to do this in C#?
有没有办法在 C# 中做到这一点？
采纳答案by Joel Marcey
This blog post might help you:
这篇博文可能对您有所帮助：
http://blog.spontaneouspublicity.com/2008/01/17/associating-strings-with-enums-in-c/
http://blog.spontaneouspublicity.com/2008/01/17/associating-strings-with-enums-in-c/
From the article:
从文章：
But enums can't have spaces in C#!" you say. Well, I like to use the System.ComponentModel.DescriptionAttribute to add a more friendly description to the enum values. The example enum can be rewritten like this:
但是枚举在C#中不能有空格！”你说。好吧，我喜欢使用System.ComponentModel.DescriptionAttribute为枚举值添加更友好的描述。示例枚举可以这样重写：
public enum States
{
California,
[Description("New Mexico")]
NewMexico,
[Description("New York")]
NewYork,
[Description("South Carolina")]
SouthCarolina,
Tennessee,
Washington
}
Notice that I do not put descriptions on items where the ToString()version of that item displays just fine.
请注意，我不会在该项目的ToString()版本显示正常的项目上添加描述。
回答by Pavel Minaev
CLR can handle absolutely any character in identifiers. However, C# restricts the identifier characters to those legal under the CLS, which space isn't. Same goes for VB.NET, by the way - spaces inside square brackets used to work in VB6, but they don't in VB.NET.
CLR 可以处理标识符中的任何字符。但是，C# 将标识符字符限制为那些在 CLS 下合法的字符，而空格不是。顺便说一下，VB.NET 也是如此——方括号内的空格曾经在 VB6 中工作，但在 VB.NET 中却没有。
回答by Micah Hahn
If you're working with Visual C# 3.0 or above I've found it convenient to just extend the enum class and use a regex to inset spaces where neccessary:
如果您使用的是 Visual C# 3.0 或更高版本，我发现扩展枚举类并使用正则表达式在必要的地方插入空格很方便：
public static class EnumExtension
{
public static String ToDisplayString(this Enum e)
{
Regex regex = new Regex(@"([^\^])([A-Z][a-z$])");
return regex.Replace(e.ToString(), new MatchEvaluator(m =>
{
return String.Format("{0} {1}", m.Groups[1].Value, m.Groups[2].Value);
}));
}
}
Notice this allows you to work with any enum as is without adding descriptions to every value.
请注意，这允许您按原样使用任何枚举，而无需为每个值添加描述。
String enumWithSpaces = MessageBoxButtons.OKCancel.ToDisplayString();
