替代在C＃中枚举 - 嵌套

Question

遇到了这个有趣的文章：

Alternative to enum by Ardalis

我怎样才能使人们有可能在类中已经嵌套类。

假设我们对每个角色都有不同的状态：作者，编辑。

作者：经验丰富，精英

编辑：批准，偶尔

我怎么能访问值：

Role.Author.Seasoned.Value

Role.Editor.Approved.Value

谢谢

Answer 1

我不明白这个问题。如果您想要嵌套类，请使用嵌套类。从您链接的文章的设计开始，您将得到：

public class Role 
{ 
    public static class Author 
    { 
     public static Role Seasoned {get;} = new Role(0, "Seasoned author"); 
     public static Role Elite {get;} = new Role(1, "Elite author"); 
    } 

    public static class Editor 
    { 
     public static Role Approved {get;} = new Role(2, "Approved editor"); 
     public static Role Occassional {get;} = new Role(3, "Occassional editor"); 
    } 

    public string Name { get; private set; } 
    public int Value { get; private set; } 

    private Role(int val, string name) 
    { 
     Value = val; 
     Name = name; 
    } 

    public IEnumerable<Role> List() 
    { 
     return new[]{Author.Seasoned,Author.Elite,Editor.Approved,Editor.Occassional}; 
    } 

    public Role FromString(string roleString) 
    { 
     return List().FirstOrDefault(r => String.Equals(r.Name, roleString, StringComparison.OrdinalIgnoreCase)); 
    } 

    public Role FromValue(int value) 
    { 
     return List().FirstOrDefault(r => r.Value == value); 
    } 
}