private void button1_Click(object sender, EventArgs e)
{
this.Close();
ReplacingBooks rp = new ReplacingBooks();
rp.Show();
}
private void btnRestart_Click(object sender, EventArgs e)
{
SelelectionScreen sp = new SelelectionScreen();
ReplacingBooks rp = new ReplacingBooks();
this.Close();
this.Hide();
sp.Show();
}