>>Hi,
>>Given:

>>private int scaleFactor = 1;
>>public int ScaleFactor
>>        {
>>            get { return scaleFactor; }
>>            set
>>            {
>>                if (value == 0)
>>                {
>>                    scaleFactor = scaleFactor == 1 ? -1 : 1;
>>                }
>>                else
>>                    scaleFactor = value;
>>            }
>>        }

Why isn't i = -1 after

int i = --ScaleFactor;

>
>Where is i ?

Sorry. Not sure what you mean. If you mean where is the 'int i = --ScaleFactor' line then it's in a button click but I don't see the relevance
Regards,
Viv