private async void onNav(string destination)
{
switch (destination)
{
case "faculties":
await _facultiesViewModel.LoadDataLists();
CurrectViewModel = _facultiesViewModel;
break;
case "specialities":
await _specialitiesViewModel.LoadDataLists();
CurrectViewModel = _specialitiesViewModel;
break;
case "students":
await _studentsViewModel.LoadDataLists();
CurrectViewModel = _studentsViewModel;
break;
case "report":
await _reportViewModel.LoadReportData();
CurrectViewModel = _reportViewModel;
break;
default:
throw new ArgumentException("Invalid navigation path.");
}
}