【深入学习.Net】.泛型集合【体检管理系统】

基于泛型List的体检管理系统（蜗牛爬坡）

第五章【体检管理系统】

　　一、项目展示图（基于.net core6.0）

二、首先准备两个Model类　　

• HealthCheckItem（项目类）：Name（项目名称）、Description（项目描述）、Price（当前项目价格）
• HealthCheckSet（套餐类）：Name（套餐名称）、Items（套餐项目集合）、Price（套餐项目总价格）
• 代码如下
  

   1 /// <summary>
   2     /// 检查项目类
   3     /// </summary>
   4     public class HealthCheckItem
   5     {
   6         public HealthCheckItem(string name, string description, decimal price)
   7         {
   8             Name = name;
   9             Description = description;
  10             Price = price;
  11         }
  12
  13         /// <summary>
  14         /// 项目名称
  15         /// </summary>
  16         public string Name { get; set; }
  17         /// <summary>
  18         /// 项目描述
  19         /// </summary>
  20         public string Description { get; set; }
  21         /// <summary>
  22         /// 项目价格
  23         /// </summary>
  24         public decimal Price { get; set; }
  25     }

  

   1     /// <summary>
   2     /// 套餐类
   3     /// </summary>
   4     public class HealthCheckSet
   5     {
   6         /// <summary>
   7         /// 套餐名称
   8         /// </summary>
   9         public string Name { get; set; }
  10
  11         /// <summary>
  12         ///套餐包含的项目
  13         /// </summary>
  14         public List<HealthCheckItem> Items { get; set; }
  15
  16         /// <summary>
  17         /// 包含项目的总价
  18         /// </summary>
  19         public decimal Price { get; set; }
  20
  21         /// <summary>
  22         /// 计算总价的方法
  23         /// </summary>
  24         public void CalcPrice()
  25         {
  26             decimal totalPrice = 0;
  27             foreach (var item in Items)
  28             {
  29                totalPrice+=item.Price;
  30             }
  31             this.Price = totalPrice;
  32         }
  33
  34         public HealthCheckSet()
  35         {
  36             Items = new List<HealthCheckItem>();
  37         }
  38         public HealthCheckSet(string name, List<HealthCheckItem> items)
  39         {
  40             Name = name;
  41             Items = items;
  42         }
  43     }

　 三、首先创建两个项目对象集合，在添加多个初始项目对象

　　　

1    private List<HealthCheckItem> AllItems = new List<HealthCheckItem>(); //所有项目对象集合
2         private List<HealthCheckItem> items = new List<HealthCheckItem>();// 套餐项目集合
3         private HealthCheckItem item1, item2, item3, item4, item5, item6, item7; //初始项目

　 四、创建套餐对象、和套餐对象集合

　　  

1  private HealthCheckSet healthSet; //初始套餐对象
2         private List<HealthCheckSet> healthSets = new List<HealthCheckSet>(); //套餐对象集合

　   五、直接上代码（Tips:本项目无需点击添加相应控件事件）

　　  

  1         public FrmMain()
  2         {
  3             InitializeComponent();
  4             Load += FrmMain_Load;
  5         }
  6
  7         /// <summary>
  8         /// 窗体加载事件
  9         /// </summary>
 10         /// <param name="sender"></param>
 11         /// <param name="e"></param>
 12         private void FrmMain_Load(object? sender, EventArgs e)
 13         {
 14             btnAdd.Enabled = false;
 15             btnDelete.Enabled = false;
 16             ComboBox();
 17             HealthTao();
 18             btnNameAdd.Click += BtnNameAdd_Click;
 19             btnAdd.Click += BtnAdd_Click;
 20             cbNameList.SelectedIndexChanged += CbNameList_SelectedIndexChanged;
 21             btnDelete.Click += BtnDelete_Click;
 22         }
 23         /// <summary>
 24         /// 删除事件
 25         /// </summary>
 26         /// <param name="sender"></param>
 27         /// <param name="e"></param>
 28         private void BtnDelete_Click(object? sender, EventArgs e)
 29         {
 30             if (dataGridView1.SelectedRows.Count > 0)
 31             {
 32                 int index = dataGridView1.SelectedRows[0].Index;
 33                 healthSets[cbNameList.SelectedIndex].Items.RemoveAt(index);
 34                 dataGridView1.DataSource = null;
 35                 Add();
 36             }
 37             else
 38             {
 39                 MessageBox.Show("表中没有该选项！");
 40                 cbHealthList.SelectedIndex = 0;
 41             }
 42         }
 43
 44         /// <summary>
 45         /// 套餐列表选中改变事件
 46         /// </summary>
 47         /// <param name="sender"></param>
 48         /// <param name="e"></param>
 49         private void CbNameList_SelectedIndexChanged(object? sender, EventArgs e)
 50         {
 51             if(cbNameList.Text != String.Empty)
 52             {
 53                 btnAdd.Enabled = true;
 54                 btnDelete.Enabled = true;
 55                 dataGridView1.DataSource = null;
 56                 Add();
 57                 lbName.Text = cbNameList.Text;
 58             }
 59         }
 60         /// <summary>
 61         /// 套餐添加项目事件
 62         /// </summary>
 63         /// <param name="sender"></param>
 64         /// <param name="e"></param>
 65         private void BtnAdd_Click(object? sender, EventArgs e)
 66         {
 67             if (dataGridView1.SelectedRows.Count <= 0)
 68             {
 69                 cbHealthList.SelectedIndex = 0;
 70             }
 71             if (cbNameList.Text != String.Empty)
 72             {
 73                 var name = cbNameList.Text;
 74                 var heal = cbHealthList.Text;
 75                 int index = cbHealthList.SelectedIndex;
 76                 if ((healthSets[cbNameList.SelectedIndex].Items.Any(m => m.Name == heal)))
 77                 {
 78                     MessageBox.Show("已添加过该项目");
 79                 }
 80                 else
 81                 {
 82                     dataGridView1.DataSource = null;
 83                     healthSets[cbNameList.SelectedIndex].Items.Add(AllItems[index]);
 84                     Add();
 85                     MessageBox.Show("添加成功！");
 86                     int healIndex = cbHealthList.SelectedIndex;
 87                     if (healIndex < cbHealthList.Items.Count - 1)
 88                     {
 89                         cbHealthList.SelectedIndex = healIndex + 1;
 90                     }
 91                     else
 92                     {
 93                         cbHealthList.SelectedIndex = 0;
 94                     }
 95                 }
 96             }
 97             else
 98             {
 99                 MessageBox.Show("请选择相应套餐！");
100             }
101         }
102         /// <summary>
103         /// 添加套餐点击事件
104         /// </summary>
105         /// <param name="sender"></param>
106         /// <param name="e"></param>
107         private void BtnNameAdd_Click(object? sender, EventArgs e)
108         {
109             if (tbName.Text.Trim() != String.Empty)
110             {
111                 healthSet = new HealthCheckSet();
112                 healthSet.Name = tbName.Text;
113                 if (!healthSets.Any(m => m.Name == tbName.Text))
114                 {
115                     cbNameList.Items.Add(healthSet.Name);
116                     healthSets.Add(healthSet);
117                     tbName.Text = String.Empty;
118                     dataGridView1.DataSource = null;
119                     int index = cbNameList.FindString(healthSet.Name);
120                     cbNameList.SelectedIndex = index;
121                     MessageBox.Show("添加成功！");
122                 }
123                 else
124                 {
125                     MessageBox.Show("已存在该套餐了！");
126                     tbName.Text = String.Empty;
127                 }
128             }
129             else
130             {
131                 MessageBox.Show("请输入套餐名称！");
132             }
133
134         }
135         /// <summary>
136         /// 下拉框绑定
137         /// </summary>
138         private void ComboBox()
139         {
140             item1 = new HealthCheckItem("身高", "用于检查身高", 5);
141             item2 = new HealthCheckItem("体重", "用于检查体重", 15);
142             item3 = new HealthCheckItem("视力", "用于检查视力", 5);
143             item4 = new HealthCheckItem("听力", "用于检查听力", 10);
144             item5 = new HealthCheckItem("肝功能", "用于检查肝功能", 45);
145             item6 = new HealthCheckItem("B超", "用于检查B超", 55);
146             item7 = new HealthCheckItem("心电图", "用于检查心脏", 65);
147             AllItems.Add(item1);
148             AllItems.Add(item2);
149             AllItems.Add(item3);
150             AllItems.Add(item4);
151             AllItems.Add(item5);
152             AllItems.Add(item6);
153             AllItems.Add(item7);
154             foreach (var item in AllItems)
155             {
156                 cbHealthList.Items.Add(item.Name);
157             }
158             cbHealthList.SelectedIndex = 0;
159
160         }
161
162         /// <summary>
163         /// 初始套餐/项目对象
164         /// </summary>
165         private void HealthTao()
166         {
167             items.Add(item1);
168             items.Add(item2);
169             items.Add(item3);
170             items.Add(item4);
171             healthSet = new HealthCheckSet("入学套餐", items);
172             healthSets.Add(healthSet);
173             cbNameList.Items.Add(healthSet.Name);
174             healthSet.CalcPrice();
175         }
176
177         /// <summary>
178         /// 表格刷新共用方法
179         /// </summary>
180         private void Add()
181         {
182             healthSets[cbNameList.SelectedIndex].CalcPrice();
183             lbPrice.Text = healthSets[cbNameList.SelectedIndex].Price.ToString("C2");
184             dataGridView1.DataSource = healthSets[cbNameList.SelectedIndex].Items;
185             dataGridView1.Columns["Name"].HeaderText = "项目名称";
186             dataGridView1.Columns["Description"].HeaderText = "项目描述";
187             dataGridView1.Columns["Price"].HeaderText = "项目价格";
188         }
189     }

　 六、小结：本项目采用泛型集合实现，进一步对控件的使用和深入学习面向对象的编程思想，有更深的学习和了解