private void buttonSearch_Click(object sender, EventArgs e) { connects.Symptomses.Clear(); connects.Ultrasonographyes.Clear(); connects.LaboratoryreSearches.Clear(); connects.Search(dateTimePicker1.Value, dateTimePicker2.Value, _idPatient); AddControls(connects.Symptomses, connects.LaboratoryreSearches, connects.Ultrasonographyes); }