public IEnumerable <TrainingsSwimmersSwimStyleDTO> SelectSwimmersTrainings()
        {
            var trainings = _swimmersTrainingManager.GetView();

            var trainingList = trainings.Select(x => new TrainingsSwimmersSwimStyleDTO()
            {
                TrainingId   = x.TrainingId,
                FirstName    = x.FirstName,
                LastName     = x.LastName,
                TrainingDate = x.TrainingDate,
                Distance     = x.Distance,
                Style        = x.Style
            }).ToList();

            return(trainingList);
        }
 public void SelectTraining()
 {
     try
     {
         Console.WriteLine("TrainingId\tName\t\tSurname\t\tDate\t\t\tDistance\t\tStyle\n");
         var trainings = _swimmersTrainingManager.GetView();
         foreach (TrainingsSwimmersSwimStyle c in trainings)
         {
             Console.WriteLine($"{c.TrainingId,10} {c.FirstName,15}{c.LastName,15}{c.TrainingDate,20}{c.Distance,15}{c.Style,15}");
         }
     }
     catch (Exception ex)
     {
         Console.WriteLine(ex.Message);
     }
 }