How ViewBag in ASP.NET MVC works

Question

How does the ASP.NET MVC\'s ViewBag work? MSDN says it is just an Object, which intrigues me, how does \"Magic\" properties such as ViewBag.F

Answer 1

public dynamic ViewBag
{
    get
    {
        if (_viewBag == null)
        {
            _viewBag = new DynamicViewData(() => ViewData);
        }

        return _viewBag;
    }
}