private void button5_Click(object sender, EventArgs e)
{
Form2 fr2 = new Form2();
fr2.Close();
Form10 fr10 = new Form10();
fr10.Show();
this.Hide();
}
private void button12_Click(object sender, EventArgs e)
{
Form10 f10 = new Form10();
f10.Close();
Form2 f2 = new Form2();
f2.Show();
this.Hide();
}
