从派生类中运行时施放特定的枚举

发布于 2025-02-06 22:22:51 字数 583 浏览 0 评论 0原文

我有一组从同一基类得出的类，所有这些都定义了同名的独特枚举。

public class DerivedClassOne : BaseClass
{
    public enum Flags
    {
        None = 0,
        cheese = 1,
        ham = 2,
        egg = 4
    }
}

public class DerivedClassTwo : BaseClass
{
    public enum Flags
    {
        None = 0,
        bacon = 1,
        lettuce = 2,
        tomato = 4
    }
}

我只有一个Baseclass的实例能够将INT（n）投放给该枚举并在运行时存储？ IE：

object flag = (BaseClassInstance.Enums.Flags)n;

原文

I have a group of classes that all are derived from the same base class, and all define unique Enums of the same name.

public class DerivedClassOne : BaseClass
{
    public enum Flags
    {
        None = 0,
        cheese = 1,
        ham = 2,
        egg = 4
    }
}

public class DerivedClassTwo : BaseClass
{
    public enum Flags
    {
        None = 0,
        bacon = 1,
        lettuce = 2,
        tomato = 4
    }
}

How would I, with only an instance of BaseClass, be able to cast an int (n) to this enum and store it at runtime? ie:

object flag = (BaseClassInstance.Enums.Flags)n;

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烟花易冷人易散 2025-02-13 22:22:51

如果您不介意 /a> enums作为enum（比object>），然后您可以执行此操作：


public abstract class BaseClass
{
    public abstract Enum ConvertInt32ToSomeEnumType( Int32 value );
}

public class DerivedClassOne : BaseClass
{
    public override Enum ConvertInt32ToSomeEnumType( Int32 value ) => (DerivedClassOne.Flags)value;
}

public class DerivedClassTwo : BaseClass
{
    public override Enum ConvertInt32ToSomeEnumType( Int32 value ) => (DerivedClassTwo.Flags)value;
}

屏幕截图证明：

If you don't mind boxing enums as Enum (which is somewhat better than Object), then you can do this:


public abstract class BaseClass
{
    public abstract Enum ConvertInt32ToSomeEnumType( Int32 value );
}

public class DerivedClassOne : BaseClass
{
    public override Enum ConvertInt32ToSomeEnumType( Int32 value ) => (DerivedClassOne.Flags)value;
}

public class DerivedClassTwo : BaseClass
{
    public override Enum ConvertInt32ToSomeEnumType( Int32 value ) => (DerivedClassTwo.Flags)value;
}

Screenshot proof: