private void btnQuanLy_Click(object sender, EventArgs e)
{
DanhMucQuanLy dmql = new DanhMucQuanLy();
dmql.Show();
this.Hide();
}
private void btnHuy_Click(object sender, EventArgs e)
{
DanhMucQuanLy FromMenu;
FromMenu = new DanhMucQuanLy();
FromMenu.Show();
this.Hide();
}
private void button1_Click(object sender, EventArgs e)
{
this.Hide();
DanhMucQuanLy FromMenu;
FromMenu = new DanhMucQuanLy();
FromMenu.Show();
}