I am using Automapper for mapping my domain model and DTO. When I map Mapper.Map<SiteDTO, SiteEntity> it works fine.

But when I use collections of the same entities, it doesn't map.

 Mapper.Map<Collection<SiteEntity>, Collection<SiteDTO>>(siteEntityCollection);

AS per Automapper Wiki, it says the lists implementing ICollection would be mapped, I am using Collection that implements ICollection, but automapper doesn't map it. Am I doing something wrong.

public class SiteEntity //SiteDTO has exactly the same properties, so I am not posting it here.
    {
        public int SiteID { get; set; }
        public string Code { get; set; }
        public string Name { get; set; }
        public byte Status { get; set; }
        public int ModifiedBy { get; set; }
        public DateTime ModifiedDate{ get; set; }
        public long TimeStamp{ get; set; }
        public string Description{ get; set; }
        public string Notes{ get; set; }
        public ObservableCollection<AreaEntity> Areas{ get; set; }
     }