C#•2y ago

Generics question

So guys, I am having a little bit of fun with generics. I need some help though.

Lets say I have a class such as this

public abstract class BaseEntity<T>
{
    public T Id { get; set; }
}

public abstract class BaseEntity<T>
{
    public T Id { get; set; }
}

public abstract class BaseEntity<T>
{
    public T Id { get; set; }
}

public abstract class BaseEntity<T>
{
    public T Id { get; set; }
}

And I define a Country entity like this

public class Country : BaseEntity<Guid>
{
    // Additional properties and methods specific to Country class
}

public class Country : BaseEntity<Guid>
{
    // Additional properties and methods specific to Country class
}

public class Country : BaseEntity<Guid>
{
    // Additional properties and methods specific to Country class
}

public class Country : BaseEntity<Guid>
{
    // Additional properties and methods specific to Country class
}

Country.Id now is Guid.

If I were to implement Currency entity that references Country, I would have to define it like this

public class Currency : BaseEntity<int>
{
    public Guid CountryId { get; set; }
}

public class Currency : BaseEntity<int>
{
    public Guid CountryId { get; set; }
}

public class Currency : BaseEntity<int>
{
    public Guid CountryId { get; set; }
}

public class Currency : BaseEntity<int>
{
    public Guid CountryId { get; set; }
}

Yada-yada-yada, some changes occur. I have X entities that reference Guid CountryId.
Now, I decide its better to make Country have an int Id, so I change it to inherit BaseEntity<int>.
I now also have to replicate that change to X other entities that have CountryId as a reference.

The question: Is there a way to reference a type to achieve something along these lines:

public class Currency : BaseEntity<int>
{
    public typeof(Country.Id) CountryId { get; set; }
}

public class Currency : BaseEntity<int>
{
    public typeof(Country.Id) CountryId { get; set; }
}

public class Currency : BaseEntity<int>
{
    public typeof(Country.Id) CountryId { get; set; }
}

public class Currency : BaseEntity<int>
{
    public typeof(Country.Id) CountryId { get; set; }
}

This way, when I impact the Country.Id type, it's automatically updated everywhere else

From what I understand, since all of this is known compile-time, there isn't really a reason why I shouldn't be able to do this, no?
All help appreciated ^_^

Generics question

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