When you have a domain object that needs to display as an interface control, like a drop down list, ifwdev suggested creating an extension method to add a .ToSelectList().

The originating object is a List of objects that have properties identical to the .Text and .Value properties of the drop down list. Basically, it's a List of SelectList objects, just not of the same class name.

I imagine you could use reflection to turn the domain object into an interface object. Anyone have any suggestions for C# code that could do this? The SelectList is an MVC drop down list of SelectListItem.

The idea of course is to do something like this in the view:

<%= Html.DropDownList("City", 
         (IEnumerable<SelectListItem>) ViewData["Cities"].ToSelectList() )