private void textbox_Leave(object sender, EventArgs e) { TextBox textBox = (TextBox)sender; switch (textBox.Name) { case "textbox_search": funcShare.textboxLeave(textbox_search, "Tìm kiếm"); break; case "textbox_nv": funcShare.textboxLeave(textbox_nv, "Here"); break; case "textbox_ncc": funcShare.textboxLeave(textbox_ncc, "Here"); break; case "textbox_ngay": funcShare.textboxLeave(textbox_ngay, "Ngày"); break; case "textbox_thang": funcShare.textboxLeave(textbox_thang, "Tháng"); break; case "textbox_nam": funcShare.textboxLeave(textbox_nam, "Năm"); break; case "textbox_item": funcShare.textboxLeave(textbox_item, "mã mặt hàng"); break; case "textbox_donvi": funcShare.textboxLeave(textbox_donvi, "đơn vị"); break; case "textbox_cost": funcShare.textboxLeave(textbox_cost, "đơn giá"); break; case "textbox_soluong": funcShare.textboxLeave(textbox_soluong, "số lượng"); break; } }