Question

我正在创建一个捐赠应用程序，该应用程序将读取文本框中的输入，并将其转换为double。然后使用方法operatingCost，它应该将转换后的double值除以17％（营业费）。当前在该方法中，我进入了变量dontationBFees，然后将其除以17，然后创建一个新变量afterFees。一切正常，但我需要创建一个运行总计，以保存所有捐款。它应显示该日期之前所有捐赠的慈善筹款总额（即捐赠的总额减去所有运营成本）。我知道我需要一个while循环或执行while while循环，以便应用程序运行并不断添加数据。我只是不明白为什么这段代码没有产生运行总数。我正在寻求帮助。有什么我要忽略的吗？

   private decimal donationBFees = 0;

    void deductOperatingCost(ref decimal afterFeesParam)
    {
        afterFeesParam = afterFeesParam - (afterFeesParam  / 100 * 17);
    }


    private void Button_Click(object sender, RoutedEventArgs e)
    {
        Boolean set = true;
        do
        {

            String donationBeforeFees;
            decimal totalDonationRaised;

            donationBeforeFees = donationBox.Text;
            donationBFees = System.Convert.ToDecimal(donationBeforeFees);


            decimal afterFees = donationBFees;
            deductOperatingCost(ref afterFees);
            afterFeesBox.Text = afterFees.ToString("$###, ##0.00");

            //This is the for loop I'm using to get the running total
            for (int i = 0; i < afterFees; i++)
            {
                decimal total = 0;
                total += afterFees;
                totalDonationRaised = total;
                totalDonationsBox.Text = totalDonationRaised.ToString("$###, ##0.00");
            }

        } while (set == false);
    }

}

}

Answer 1

    private decimal donationBFees = 0;
    private decimal total = 0;
    private decimal afterFees = 0;
    private decimal totalDonationRaised;

    void deductOperatingCost(ref decimal afterFeesParam)
    {
        afterFeesParam = afterFeesParam - (afterFeesParam  / 100 * 17);
    }



    private void Button_Click(object sender, RoutedEventArgs e)
    {


            String donationBeforeFees;


            donationBeforeFees = donationBox.Text;
            donationBFees = System.Convert.ToDecimal(donationBeforeFees);


            decimal afterFees = donationBFees;
            deductOperatingCost(ref afterFees);
            afterFeesBox.Text = afterFees.ToString("$###, ##0.00");

            total = afterFees;
            totalDonationRaised = total;
            totalDonationsBox.Text = totalDonationRaised.ToString("$###, ##0.00");

    }

    private void donationBox_TextChanged(object sender, TextChangedEventArgs e)
    {
        total += afterFees;
        totalDonationRaised = total;
        totalDonationsBox.Text = totalDonationRaised.ToString("$###, ##0.00");
    }
}

Answer 2

我正在尝试将此方法用于运行总计，但是在删除它们时会增加它的数量。

    private decimal donationBFees = 0;
    private decimal total = 0;
    private decimal afterFees = 0;
    private decimal totalDonationRaised;

    void deductOperatingCost(ref decimal afterFeesParam)
    {
        afterFeesParam = afterFeesParam - (afterFeesParam  / 100 * 17);
    }

    void runningTotal(ref decimal runningTotalParam)
    {
        runningTotalParam = runningTotalParam + runningTotalParam;
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {


            String donationBeforeFees;


            donationBeforeFees = donationBox.Text;
            donationBFees = System.Convert.ToDecimal(donationBeforeFees);


            decimal afterFees = donationBFees;
            deductOperatingCost(ref afterFees);
            afterFeesBox.Text = afterFees.ToString("$###, ##0.00");

            total = afterFees;
            totalDonationRaised = total;
            totalDonationsBox.Text = totalDonationRaised.ToString("$###, ##0.00");

    }

    private void donationBox_TextChanged(object sender, TextChangedEventArgs e)
    {
        //total += afterFees;

        runningTotal(ref total);
        totalDonationRaised = total;
        totalDonationsBox.Text = totalDonationRaised.ToString("$###, ##0.00");
    }

}

运行总计C＃

2 个答案: