private void RefreshSpecialtyForSearchProperty()
        {
            SpecialtiesForSearch.Clear();

            try
            {
                Specialty item0 = new Specialty {
                    Id = 0, Name = DafaultConstant.DefaultSpecialty
                };
                SpecialtiesForSearch.Add(item0);
                Specialties.ToList().ForEach(x => SpecialtiesForSearch.Add(x));
                OnPropertyChanged(nameof(SpecialtiesForSearch));
            }
            catch (EntityException e)
            {
                OnEntityException(e);
            }
            catch (DbEntityValidationException e)
            {
                OnDbEntityValidationException(e);
            }
        }