private void ExecuteSave(object p)
        {
            try
            {
                if (!ServiceDataProvider.ValidateExamPeriodActivity(StartDate.Value))
                {
                    MessageBox.Show("Active Exam Period already exists in defined period!", "Exam Period Validation",
                                    MessageBoxButton.OK, MessageBoxImage.Warning);

                    return;
                }

                if (editExamPeriod != null)
                {
                    editExamPeriod.Name        = Name;
                    editExamPeriod.StartDate   = StartDate.Value;
                    editExamPeriod.EndDate     = EndDate.Value;
                    editExamPeriod.SchoolYear  = SchoolYear;
                    editExamPeriod.IsActive    = IsActive;
                    editExamPeriod.IsApsolvent = IsApsolvent;

                    ServiceDataProvider.EditExamPeriod(editExamPeriod);
                    eventAggregator.GetEvent <ExamPeriodEvent>().Publish(editExamPeriod);
                }
                else
                {
                    ExamPeriod ep = new ExamPeriod()
                    {
                        Name        = Name,
                        StartDate   = StartDate.Value,
                        EndDate     = EndDate.Value,
                        SchoolYear  = SchoolYear,
                        IsActive    = IsActive,
                        IsApsolvent = IsApsolvent
                    };

                    ServiceDataProvider.AddExamPeriod(ep);
                }
            }
            catch (Exception ex)
            {
                ex.Message.ToString();
            }
            finally
            {
                view.Close();
            }
        }