Why can't display desire result?(c#)

为何我的 total  一直 是 0


using System;
class Calculate
{
    private int casesSold;
    private int soldBar;
    private double pricePerBar;
    private double afterDiscoundPerBar;
    private double total;
    public Calculate(int cases,double price)
    {
        casesSold = cases;
        pricePerBar = price;
        SetCasesSold(cases);
        SetEarn(price);
        SetTotal();
    }
    public void SetCasesSold(int val)
    {
        soldBar=val*12;
    }
    public void SetEarn(double val)
    {
        afterDiscoundPerBar = val * ((100 - 10) / 100);
    }
    public void SetTotal()
    {
        total= afterDiscoundPerBar* soldBar;
    }
    public int GetSoldBar()
    {
        return soldBar;
    }
    public double GetEarn()
    {
        return afterDiscoundPerBar;
    }
    public double GetTotal()
    {
        return total;
    }
}
class Price
{
    public static void Main()
    {
        Console.WriteLine("How many cases sold?");
        int cases = int.Parse(Console.ReadLine());
        Console.WriteLine("Price Per bar sold :");
        double perBar = double.Parse(Console.ReadLine());
        Calculate First = new Calculate(cases,perBar);
        Console.WriteLine("Total is :" + First.GetTotal());
        Console.ReadLine();
    }
   
}

public void SetEarn(double val)
    {
        afterDiscoundPerBar = val * ((100 - 10) / 100);
        //((100 - 10) / 100); is always 0
    }

怀疑converted to int了 。 。
试把它convert 去double 吧 。 。

[ 本帖最后由 backspace 于 21-3-2006 08:47 AM 编辑 ]