public void Check(Roullete roullete)
{
if (roullete == null)
{
throw new ArgumentNullException(nameof(roullete) + "can't be null");
}
}
public void OnNumber(Roullete roullete, int value)
{
Check(roullete);
if (value < 0 || value > 36)
{
throw new ArgumentException(nameof(roullete) + "can't be less than 0 and more than 36");
}
this.number = value;
roullete.OnNumber += ShowMessageOnNumber;
}
public void OnBlack(Roullete roullete)
{
Check(roullete);
roullete.BlackNumber += ShowMessage;
roullete.RedNumber -= ShowMessage;
}
public void OnEven(Roullete roullete)
{
Check(roullete);
roullete.EvenNumber += ShowMessage;
roullete.OddNumber -= ShowMessage;
}