private void btapplythreshold_Click(object sender, System.EventArgs e) { try { if (txtTemThresh.Text != "" && txtHumiThresh.Text != "" && txtPhoneThresh.Text != "") { Database myDatabase = new Database(); int id = cbSelectVan.SelectedIndex + 1; int a = myDatabase.setTempVan(id,float.Parse(txtTemThresh.Text)); int b = myDatabase.setHumiVan(id,float.Parse(txtHumiThresh.Text)); int c = myDatabase.setPhoneNumber(txtPhoneThresh.Text); if(a == 1 && b == 1 && c == 1) { MessageBox.Show("Save successful", "Imformation"); } else { MessageBox.Show("Not successful","Imformation"); } } else { MessageBox.Show("Not enough imformation", "Error"); } } catch { } }