C#如图所示，如何单击确定按钮对已选物品计算总价

Question

怎样用Checked属性值或CheckState属性值的改变去处理

Answer 1

可以参考一下

using System;
using System.Windows.Forms;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public int PeanutPrice => chkPeanut.Checked ? 5 : default;
        public int MelonSeedPrice => chkMelonSeed.Checked ? 7 : default;
        public int BeerPrice => chkBeer.Checked ? 4 : default;
        public int HamSausagePrice => chkHamSausage.Checked ? 2 : default;

        public Form1()
        {
            InitializeComponent();
        }

        private void btnCalculate_Click(object sender, EventArgs e)
        {
            txtTotalPrice.Text = (PeanutPrice + MelonSeedPrice + BeerPrice + HamSausagePrice).ToString();
        }
    }
}