运行总计C# [英] Running Total C#

问题描述

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，应将转换后的值加倍并除以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，然后创建一个新的变量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?

I'm creating a donation application that reads the input in a textbox, converts it to a double. Then using the method operatingCost, it should take that converted double and divide it by 17% (operating fees). Currently in the method, I have the variable dontationBFees coming in and then being divided by 17 and creating a new variable afterFees. Everything is working fine but I need to create a running total that will save all of the donations. It should display the total amount raised for the charity (that is, the total amount donated less all operating costs) for all donations up to that point. I know I need a while loop or do while loop so that the app runs and keeps adding the data. I just don't see why this code isn't producing the running total. I'm looking for help. Is there something I'm overlooking.

   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);
    }

}

}

推荐答案

我正在尝试将此方法用于正在运行的总计，但在删除它们时会使用其添加数量.

I'm trying to use this method for the running total but its adding number when I delete them.

    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");
    }

}

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