private void Save(object sender)
{
if (SelectedPeriod != null && SelectedDateTime.HasValue && (SelectedPeriod?.Id != (OldPeriod?.Id ?? 0) || SelectedDateTime != OldDateTime))
{
_requestService.AddNewExecuteDate(_requestId, SelectedDateTime.Value, SelectedPeriod, Description);
OldDateTime = SelectedDateTime;
OldPeriod = SelectedPeriod;
_view.DialogResult = true;
}
}