title: Switch: Multiple values in one case?
body: <p>I have the following piece of code, but yet when I enter "12" I still get "You an old person". Isn't 9 - 15 the numbers 9 UNTIL 15? How else do I handle multiple values with one case?</p>
  
  <pre><code>  int age = Convert.ToInt32(txtBoxAge.Text);
  
    switch (age) 
  
    {
      case 1 - 8:
    MessageBox.Show("You are only " + age + " years old\n You must be kidding right.\nPlease fill in your *real* age.");
      break;
      case 9 - 15:
    MessageBox.Show("You are only " + age + " years old\n That's too young!");
      break;
      case 16-100:
    MessageBox.Show("You are " + age + " years old\n Perfect.");
      break;
      default:
    MessageBox.Show("You an old person.");
      break;
    }
  </code></pre>