public void OnAdvancedSearch()
{
searchView.OnOpen();
if (!searchView.IsInitialized)
{
searchView.Initialize(FilterTeachers, _repo.GetAllModelsOfType <Teacher>());
searchView.LoadFaculties(_repo.GetAllModelsOfType <Faculty>());
searchView.LoadSubjects(_repo.GetAllModelsOfType <Subject>());
searchView.IsInitialized = true;
}
}