Access property/variable from unknown object

Question

I have a list of 'object' that has different kinds of objects in it. I need to be able to edit/read a property of the objects that all of them have, but I don't know how to do that.

List<object> objects = new list<object>();
SomeObject obj;

objects.add(obj);

Int value = objects(0).somevariable;

But it obviously can't read 'somevariable' since the code doesn't know that the object has it. Is doing this possible since all the objects in the list has the variable 'somevariable'?

Also, I'm using XNA, but that probably doesn't make any difference.

Edit: Thanks everybody for your answers, I'll try them tomorrow when I get on my computer.

Answer 1

If you can modify those classes and make sense on your scenario, you could define a common interface

public interface IMyInterface
{
     int Somevariable { get; set;}
}

and let your classes implement this interface, then you will be able to create a generic list like this

var objects = new List<IMyInterface>();
int value = objects[0].Somevariable;