private void btnAdd_Click(object sender, EventArgs e) { try { if (txtName.Text.Length > 0) { Ref myref = new Ref(); myref.refName = txtName.Text; myref.refSize = Convert.ToInt32(txtSize.Text); refDB myrefs = new refDB(); myrefs.Insert(myref); DataLoad(); myrefs.Dispose(); } else { MessageBox.Show("냉장고명을 입력하세요"); return; } MessageBox.Show($"{txtName.Text}이 추가되었습니다"); } catch (Exception err) { MessageBox.Show(err.Message); } }