using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsApp1.Home { public partial class Book_infor_manage : Form { public Book_infor_manage() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { this.Close(); } } }