CODEWITHSUNDEEP
c#generics
KrisTrip
KrisTrip

Reputation: 5043

C# Using Generic Class without Specifying Type

I have a generic class I have created as so:

public abstract class MyClass<T>
{
    public T Model
    {
        get;
        protected set;
    }        
}

And at some point in my code I want to do something with anything of MyClass type. Something like:

private void MyMethod(object param)
{
    myClassVar = param as MyClass;
    param.Model....etc
}

Is this possible? Or do I need to make MyClass be a subclass of something (MyClassBase) or implement an interface (IMyClass)?

Upvotes: 17

Views: 21303

Answers (3)

IUnknown
IUnknown

Reputation: 22448

I believe what you are need is to make MyMethod method generic and add constraint on its type parameter:

interface IMyInterface
{
    void Foobar();
}

class MyClass<T>
{
    public T Model
    {
        get;
        protected set;
    }
}

private void MyMethod<T>(MyClass<T> param) where T : IMyInterface
{
    param.Model.Foobar();
}

Upvotes: 16

SLaks
SLaks

Reputation: 887453

No.

You need to inherit a non-generic base class or implement a non-generic interface.

Note that you won't be able to use the Model property, since it cannot have a type (unless you constrain it to a base type and implement an untyped property explicitly).

Upvotes: 6

Tadeusz
Tadeusz

Reputation: 6883

Yes, you need. If type of generic class is undefined you need to create generic interface or using base-class...

Upvotes: 3

Related Questions