哪个更好 ???
public class Order
{
private double _price;
private double _quantity;
public double TotalCash
{
get
{
return _price * _quantity;
}
}
或者
public class Order
{
private double _totalCash;
private double _price;
private double _quantity;
private void CalcCashTotal()
{
_totalCash = _price * _quantity
}
public double Price
{
set
{
_price = value;
CalcCashTotal();
}
}
public double Quantity
{
set
{
_price = value;
CalcCashTotal();
}
}
public double TotalCash
{
get
{
return _totalCash;
}
}