private void exit_b_Click(object sender, System.EventArgs e)
{
inputPanel1.Enabled = false;
cn.Close();
Form71 frm71 = new Form71();
frm71.Show();
this.Close();
}
private void button1_Click(object sender, System.EventArgs e)
{
Form71 frm71 = new Form71();
frm71.Show();
}