c# - 枚举可能有范围吗？

Question

例如，在 C# 中，您能否在枚举类型中使用数字范围

public enum BookType
{
    Novel = 1,
    Journal = 2,
    Reference = 3,
    TextBook = 4 .. 10
}

编辑:需要这样做的原因是从数字转换为枚举类型，例如:

int iBook = 5
BookType btBook = (BookType)ibook
Debug.Print "Book " + ibook + " is a " btBook

预期的输出是:Book 5 is a TextBook

Answer 1

正如其他人所说，不，这是不可能的。如果它们是标志，则可以组合枚举值:

[Flags]
public enum BookType
{
    Novel = 0,
    Journal = 1 << 0,
    Reference = 1 << 1,
    TextBook1 = 1 << 2,
    TextBook2 = 1 << 3,
    TextBook3 = 1 << 4,
    TextBook4 = 1 << 5,
    TextBook5 = 1 << 6,
    TextBooks1To5 = TextBook1 | TextBook2 | TextBook3 | TextBook4 | TextBook5
}