private void Button9_Click(object sender, EventArgs e)
 {
     panel1.Show();
     SortByRange.Hide();
     label5.Hide();
     textBox2.Hide();
     panel2.Hide();
     label3.Hide();
     button4.Hide();
     button10.Show();
     label17.Show();
     textBox14.Show();
 }
 private void Button5_Click(object sender, EventArgs e)
 {
     panel1.Hide();
     SortByRange.Show();
     button6.Show();
 }