Extension methods only work on instances, so it can’t be done, but with some well-chosen class/method names and generics, you can produce a result that looks just as good:
public class SelectList
{
// Normal SelectList properties/methods go here
public static SelectList Of<T>()
{
Type t = typeof(T);
if (t.IsEnum)
{
var values = from Enum e in Enum.GetValues(type)
select new { ID = e, Name = e.ToString() };
return new SelectList(values, "Id", "Name");
}
return null;
}
}
Then you can get your select list like this:
var list = SelectList.Of<Things>();
IMO this reads a lot better than Things.ToSelectList()
.