public AddCrop()
{
InitializeComponent();
GetAllFieldsCallback handlerFields = new GetAllFieldsCallback(LoadFieldList);
FieldModel fm = new FieldModel();
fm.GetAllFields(new Action<List<FieldModel>>(handlerFields));
GetAllTimePeriodsCallback handlerTpms = new GetAllTimePeriodsCallback(LoadTimePeriodList);
TimePeriodModel tpm = new TimePeriodModel();
tpm.GetAllTimePeriods(new Action<List<TimePeriodModel>>(handlerTpms));
}
