private void Change_Click(object sender, EventArgs e)
{
  int n;
  n = Convert.ToInt16(textBox1.Text, 10);
  switch (n)
  {
     case 0:
         label2.Text = "Zero";
         break;
     case 1:
         label2.Text = "One";
         break;
     case 2:
         label2.Text = "Two";
         break;
     case 3:
         label2.Text = "Three";
         break;
     case 4:
         label2.Text = "Foure";
         break;
     case 5:
         label2.Text = "Five";
         break;
     case 6:
         label2.Text = "Six";
         break;
     case 7:
         label2.Text = "Seven";
         break;
     case 8:
         label2.Text = "Eight";
         break;
     case 9:
         label2.Text = "Nine";
         break;
     default:
         label2.Text = "Please enter a nuuber 0 to 9";
         break;

   }
}
