public List <T> GetAll(Expression <Func <T, bool> > filter = null)
 {
     using (RentaCarContext context = new RentaCarContext())
     {
         return(filter == null?
                context.Set <T>().ToList() :
                    context.Set <T>().Where(filter).ToList());
     }
 }
 public T Get(Expression <Func <T, bool> > filter)
 {
     using (RentaCarContext context = new RentaCarContext())
     {
         return(context.Set <T>().SingleOrDefault(filter));
     }
 }
 public virtual List <TModel> Get(Tsearch search)
 {
     return(_mapper.Map <List <TModel> >(_context.Set <TDatabase>().ToList()));
 }