CODEWITHSUNDEEP
c#generics
user3281625
user3281625

Reputation: 21

How to deal with different generic classes (sharing a base type) in a collection?

I have

public class BaseClass {
public string Name;
}

public class A<T> : BaseClass {
public T Value;
public Action<T> ToDo;
}

public List<BaseClass> MyList;

I fill MyList with 

A<int>, A<double>, A<SomeUnknownType>.

When processing the elements of MyList, I want to call ToDo(Value) without having to know what the specific T is in each case.

Upvotes: 2

Views: 94

Answers (2)

thepirat000
thepirat000

Reputation: 13114

Smells bad, but you can try this:

foreach (var item in MyList)
{
    if (item.GetType().IsGenericType)
    {
        Type genericType = item.GetType().GetGenericArguments()[0];
        ...
    }
}

And you get the generic type into the genericType variable.

In order to determine if the type is A, you can do this:

bool isA = item.GetType().GetGenericTypeDefinition().Equals(typeof(A<>));

Upvotes: 2

Leonardo
Leonardo

Reputation: 11389

you can simply use typeof comparison between the current enumeration result (a.k.a "item") like if(item.GetType().Equals(typeof(A<>))

Upvotes: -1

Related Questions