/// <summary>
/// The on spin.
/// </summary>
/// <param name="e"> The e. </param>
/// <exception cref="ArgumentNullException">Any Exception </exception>
protected virtual void OnSpin(SpinEventArgs e)
{
if (e == null)
{
throw new ArgumentNullException("e");
}
if (e.Direction == SpinDirection.Increase)
{
this.DoIncrement();
}
else
{
this.DoDecrement();
}
}