private void Swag_OnSubtraction(SwagEventArgs e)
 {
     LastMode.Text = "That's a negative";
 }
 private void Swag_Addition(SwagEventArgs e)
 {
     LastMode.Text = "That's a positive";
 }
 private void Swag_OnUpdate(SwagEventArgs e)
 {
     SwagMeasurer.Text = Convert.ToString(Swag.Get());
 }