private void bt_QLBaoCao_Click(object sender, EventArgs e)
{
Form tl = new QLTheLoai();
this.Hide();
tl.ShowDialog();
this.Close();
}
private void button2_Click(object sender, EventArgs e)//ql the loai
{
Form dd = new QLTheLoai();
this.Hide();
dd.ShowDialog();
this.Close();
}
private void ql_theloai_Click(object sender, EventArgs e)
{
GiaoDienChinh_Load(sender, e);
Form ql = new QLTheLoai();
this.Hide();
ql.ShowDialog();
this.Close();
}