如何从单独的事件处理程序访问变量

Question

我一直在学校上班，一切都在游泳，直到我遇到困难。我必须编写一个程序，要求用户提供销售人员的初始（C，D或M）以及他们所做的销售价格。我还必须保持每个销售员赚取的佣金的运行记录，直到我清除或退出程序。

当我点击计算佣金时，它当然应该计算佣金（它确实如此），但因为变量是方法级别（或某些较低的访问级别）而且我似乎无法返回它们我可以＆ ＃39; t传递第二种方法所需的信息来自＆＃34; ... C＆＃34;变量

namespace SunshineHotTubs
{
    public partial class FrmSalesCommission : Form
    {
        double cliffS = 0;
        double dinoS = 0;
        double marshaS = 0;

        public FrmSalesCommission()
        {
            InitializeComponent();
        }

        public void btnCalcCommission_Click(object sender, EventArgs e)
        {
            string salesperson = txtInitial.Text;
            double sale = Convert.ToDouble(txtSaleTotal.Text);

            switch(salesperson)
            {
                case "c":
                case "C":
                    cliffS += sale;
                    double cliffC = cliffS * .10;
                    lblCommission.Text = Convert.ToString(cliffC);
                    break;
                case "d":
                case "D":
                    dinoS += sale;
                    double dinoC = dinoS * .10;
                    lblCommission.Text = Convert.ToString(dinoC);
                    break;
                case "m":
                case "M":
                    marshaS += sale;
                    double marshaC = marshaS * .10;
                    lblCommission.Text = Convert.ToString(marshaC);
                    break;
            }
        }

        private void btnDisplayCommission_Click(object sender, EventArgs e)
        {
            MessageBox.Show("Cliff's Commission: " + cliffC + "\n"
                            + "Dino's Commission: " , "Total Commissions");
        }
    }
}

对我来说，获取btnDisplayCommission_Click事件所需信息的最简单方法是什么？

Answer 1

您已在类级别声明变量：

double cliffC = 0;
double dinoC = 0;
double marshaC = 0;

只需替换它：

double cliffC = cliffS * .10;
double dinoC = dinoS * .10;
double marshaC = marshaS * .10;

关于这个：

cliffC = cliffS * .10;
dinoC = dinoS * .10;
marshaC = marshaS * .10;

<强>更新

您也可以在btnDisplayCommission_Click方法中计算值：

MessageBox.Show("Cliff's Commission: " + cliffS * .10 + "\n"
                + "Dino's Commission: " , "Total Commissions");