Instructing a generic to return an object of a dynamic type

Question

This question is sort of a follow-up to my original question here.

Let\'s say that I have the following generic class (simplifying! ^_^):

class CasterCla         


        

Answer 1

If you have control over the classes you'll be working with, have them all instantiate an interface that contains the methods you'll be calling and once you instantiate, cast to the interface.

I also posted an answer to your previous question with the same idea.

Answer 2

Just pass any type to ObjectCreateMethod, and you'll get a dynamic method handler, which you can later use to cast a generic object into a specific type, invoking CreateInstance.

ObjectCreateMethod _MyDynamicMethod = new ObjectCreateMethod(info.PropertyType);
object _MyNewEntity = _MyDynamicMethod.CreateInstance();

Call this class:

using System.Reflection;
using System.Reflection.Emit;

public class ObjectCreateMethod
{
    delegate object MethodInvoker();
    MethodInvoker methodHandler = null;

    public ObjectCreateMethod(Type type)
    {
        CreateMethod(type.GetConstructor(Type.EmptyTypes));
    }

    public ObjectCreateMethod(ConstructorInfo target)
    {
        CreateMethod(target);
    }

    void CreateMethod(ConstructorInfo target)
    {
        DynamicMethod dynamic = new DynamicMethod(string.Empty,typeof(object),new Type[0], target.DeclaringType);
        ILGenerator il = dynamic.GetILGenerator();
        il.DeclareLocal(target.DeclaringType);
        il.Emit(OpCodes.Newobj, target);
        il.Emit(OpCodes.Stloc_0);
        il.Emit(OpCodes.Ldloc_0);
        il.Emit(OpCodes.Ret);

        methodHandler = (MethodInvoker)dynamic.CreateDelegate(typeof(MethodInvoker));
    }

    public object CreateInstance()
    {
        return methodHandler();
    }
}