体检套餐管理系统 -- List<T>单列集合

 
 /// <summary>
    /// 项目类
    /// </summary>
public class HealthCheckItem
    {
        //项目描述
        private string description;
        //项目名称
        private string name;
        //项目价格
        private int price;

        //无参构造
        public HealthCheckItem()
        {
        }

        //有参构造
        public HealthCheckItem(string description, string name, int price)
        {
            this.description = description;
            this.name = name;
            this.price = price;
        }

        public string Description { get => description; set => description = value; }
        public string Name { get => name; set => name = value; }
        public int Price { get => price; set => price = value; }
    }

  /// <summary>
    /// 套餐类
    /// </summary>
   public class HealthCheckSet
    {
        //套餐名
        private string name;
        //套餐总价格
        private int price;
        //存储套餐内的项目
        private List<HealthCheckItem> items = new List<HealthCheckItem>();

        //无参构造
        public HealthCheckSet()
        {
        }
        //有参构造
        public HealthCheckSet(string name)
        {
            this.name = name;
            
        }

        

        public string Name { get => name; set => name = value; }
        public int Price { get => price; set => price = value; }
        public List<HealthCheckItem> Items { get => items; set => items = value; }
    }

  /// <summary>
        /// 体检套餐管理系统 -- List<T>单列集合
        /// </summary>
        public FrmMain()
        {
            InitializeComponent();
        }

        //存储套餐类的集合
        List<HealthCheckSet> Set = new List<HealthCheckSet>();
        private void FrmMain_Load(object sender, EventArgs e)
        {
            //删除多余的列
            this.dgvHealth.AutoGenerateColumns = false;
            //删除多余的行
            this.dgvHealth.AllowUserToAddRows = false;

            /*
             * 初始化套餐类集合
             * 调用刷新datagridview的方法
             * */
            HealthCheckSet set0 = new HealthCheckSet("请选择");
            HealthCheckSet set1 = new HealthCheckSet("入学体检");
            Set.Add(set0);
            Set.Add(set1);
            AddExamCbo();
        }

        //存储所有套餐内项目的集合
        public List<HealthCheckItem> allItems = new List<HealthCheckItem>();

        public void AddPhyCbo()
        {
            //清空集合
            allItems.Clear();

            //集合初始化
            HealthCheckItem item1 = new HealthCheckItem("用于检查身高。", "身高", 5);
            HealthCheckItem item2 = new HealthCheckItem("用于检查体重。", "体重", 5);
            HealthCheckItem item3 = new HealthCheckItem("用于检查肝功能。", "肝功能", 50);
            HealthCheckItem item4 = new HealthCheckItem("用于检查视力。", "视力", 5);
            HealthCheckItem item5 = new HealthCheckItem("用于检查听力。", "听力", 5);
            HealthCheckItem item6 = new HealthCheckItem("用于检查B超。", "B超", 80);
            HealthCheckItem item7 = new HealthCheckItem("用于检查心电图。", "心电图", 100);
            allItems.AddRange(new HealthCheckItem[] { item1, item2, item3, item4, item5, item6, item7 });
            /*
             * 绑定刷新项目下拉框
             * */
            this.cboPhy.DisplayMember = "name";
            this.cboPhy.DataSource = new BindingList<HealthCheckItem>(allItems);
        }

        public void AddExamCbo()
        {
            /*
             * 绑定刷新套餐下拉框
             * */
            this.cboExams.DataSource = new BindingList<HealthCheckSet>(Set); ;
            this.cboExams.DisplayMember = "name";
        }

        private void cboExams_SelectedIndexChanged(object sender, EventArgs e)
        {
            //调用绑定刷新datagridview方法
            AddDgv();
            //调用刷新金额的方法
            CalcPrice();
            //调用删除按钮状态方法
            Btn();

            /*
             * 如果不是请选择也就是0下标还原初始状态（按钮为禁用，项目下拉框无项目）
             * 反之，按钮解除禁用状态，项目下拉框从新填充数据
             * */
            if (this.cboExams.SelectedIndex > 0)
            {
                AddPhyCbo();
                this.btnAdd.Enabled = true;
                this.lblNames.Text = cboExams.Text;
            }
            else
            {
                this.btnAdd.Enabled = false;
                this.btnDel.Enabled = false;
                this.lblNames.Text = cboExams.Text;
                this.cboPhy.DataSource = null;

            }
        }

        public void AddDgv()
        {
            /*
             * 将选中套餐的项绑定刷新datagridview
             * */
            foreach (HealthCheckSet item in Set)
            {
                if (item.Name.Equals(cboExams.Text))
                {
                    this.dgvHealth.DataSource = new BindingList<HealthCheckItem>(item.Items);
                    return;
                }
            }
        }

        public void item()
        {
            foreach (HealthCheckSet item in Set)
            {
                if (item.Name.Equals(cboExams.Text))
                {
                    foreach (HealthCheckItem it in item.Items)
                    {
                        if (it.Name.Equals(this.cboPhy.Text))
                        {
                            /*
                             * 判定是否已存在要添加的项
                             * */
                            MessageBox.Show("您已添加过此项！");
                            return;
                        }
                    }
                    foreach (HealthCheckItem it in allItems)
                    {
                        if (it.Name.Equals(this.cboPhy.Text))
                        {
                            /*
                             * 如果通过验证，可以添加，则将该项添加到集合中，并刷新datagridview与套餐价格
                             * */
                            item.Items.Add(it);
                            AddDgv();
                            CalcPrice();
                            MessageBox.Show("添加成功！");

                            return;
                        }
                    }
                    return;
                }
            }
        }
        public void CalcPrice()
        {
            foreach (HealthCheckSet item in Set)
            {
                if (item.Name.Equals(cboExams.Text))
                {
                    /*
                     * 计算套餐金额
                     * */
                    item.Price = 0;
                    foreach (HealthCheckItem it in item.Items)
                    {
                        item.Price += it.Price;
                    }
                    //将套餐金额赋值给控件，并显示
                    this.lblPrices.Text = item.Price.ToString();
                    return;
                }
            }
            
        }
        private void btnAdd_Click(object sender, EventArgs e)
        {
            //添加套餐项目

            item();
            Btn();
        }

        private void btnNew_Click(object sender, EventArgs e)
        {
            //非空验证
            if (txtNewName.Text == "" || txtNewName.Text == null)
            {
                MessageBox.Show("请输入套餐名称!");
                return;
            }

            /*
             * 将通过验证的套餐名称添加到集合并刷新套餐下拉框
             * */
            HealthCheckSet set = new HealthCheckSet(this.txtNewName.Text);
            Set.Add(set);

            AddExamCbo();
            this.cboExams.Text = this.txtNewName.Text;
            MessageBox.Show("添加成功！");
        }

        private void btnDel_Click(object sender, EventArgs e)
        {
            foreach (HealthCheckSet item in Set)
            {
                if (item.Name.Equals(cboExams.Text))
                {
                    for (int i = 0; i < item.Items.Count; i++)
                    {
                        if (item.Items[i].Name.Equals(this.dgvHealth.SelectedRows[0].Cells[0].Value.ToString()))
                        {
                            /*
                             * 删除要删除的项并刷新相关控件
                             * */
                            item.Items.RemoveAt(i);
                            AddDgv();
                            CalcPrice();
                            this.lblPrices.Text = item.Price.ToString();
                            MessageBox.Show("删除成功！");
                            Btn();
                            return;
                        }
                    }
                    return;
                }
            }
        }
        public void Btn()
        {
            foreach (HealthCheckSet item in Set)
            {
                if (item.Name.Equals(cboExams.Text))
                {
                    /*
                     * 判断删除按钮的状态，如果集合里有数据为启用，无数据为禁用
                     * */
                    if (item.Items.Count > 0)
                    {
                        this.btnDel.Enabled = true;
                    }
                    else
                    {
                        this.btnDel.Enabled = false;
                    }
                    return;
                }
            }
            
        }
    }