select single item from list c#

using (var db = new ApplicationDbContext())
                {
///itemModel is the model with gets & sets
					var file = db.Table
                        .Where(x => x.Id == id)
                        .Select( x => new itemModel
                        {
                            itemTest = x.itemTest,
                            
                        }).ToList();
///creating a new model
                    ModelList ML = new ModelList();
///creating a new list
                    ML.ViewModelList = new List<ViewModel>();
///getting each item from list
                    foreach(var item in file)
                    {
                        ViewModel img = new ViewModel();

                        img.itemTest = item.itemTest;

                        ML.ViewModelList.Add(img);
                    }
///selecting the last item from the list
                    var singleitem = ML.ViewModelList.Select(x => x.itemTest).LastOrDefault();
				}