I want to use conditional binding in ninject, based on passed parameters. I have something like below:

public class Subject
{
}

public interface ITarget
{
}

public class Target1 : ITarget
{
}

public class Target2 : ITarget
{
}

And now I need to instantiate ITarget interface:

    public void MethodName(IKernel kernel)
    {
        ITarget target1 = kernel.Get<ITarget>(new Parameter("name", new Subject(), true)); // Should be instance of Target1
        ITarget target2 = kernel.Get<ITarget>(); // Should be instance of Target2
    }

I have problems to define proper bindings. I tried the following:

kernel.Bind<ITarget>().To<Target1>().When(Predicate);
kernel.Bind<ITarget>().To<Target2>();

private bool Predicate(IRequest request)
{
    IParameter parameter = request.Parameters.Count == 0 ? null : request.Parameters[0];
    if (parameter == null)
    {
        return false;
    }
    object parameterValue = parameter.GetValue( /*what to put here?*/);
    return parameterValue != null && parameterValue.GetType().IsAssignableFrom(typeof(Subject));
}

but I don't know how to get value of passed parameter. I need to pass IContext instance to GetValue method, but don't know how to get valid instance of IContext. Or maybe there is better way to accomplish my task?

Regards