首页 > 代码库 > 第五章使用Dictionary替换List<t>实现功能
第五章使用Dictionary替换List<t>实现功能
/// <summary> /// 体检项目类 /// 保存一个体检项目包括项目名、描述、单价 /// 例如：肝功能、用于检察肝功能、60 /// </summary> public class HealthCheckItem2 {
public HealthCheckItem2(string name, string description,decimal price) { this.Name = name; this.Description = description; this.Price = price;
}
private string name; /// <summary> /// 项目名称 /// </summary> public string Name { get { return name; } set { name = value; } } /// <summary> /// 项目描述 /// </summary> private string description; public string Description { get { return description; } set { description = value; } }
/// <summary> /// 项目价格 /// </summary> private decimal price; public decimal Price { get { return price; } set { price = value; } }
}
}
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/// <summary> /// 体检套餐类 /// 每个套餐包括要检查的项目、套餐名称、总价 /// </summary> public class HealthCheckSet2 {
public HealthCheckSet2(string name, Dictionary<string, HealthCheckItem2> items) { this.Name = name; this.Items = items; } public HealthCheckSet2() { items = new Dictionary<string, HealthCheckItem2>(); }
/// <summary> /// 套餐名称 /// </summary> private string name; public string Name { get { return name; } set { name = value; } } /// <summary> /// 检查项目 /// </summary> private Dictionary<string, HealthCheckItem2> items; public Dictionary<string, HealthCheckItem2> Items { get { return items; } set { items = value; } } /// <summary> /// 套餐价格 /// </summary> private decimal price; public decimal Price { get { return price; } set { price = value; }
} /// <summary> /// 套餐计算方法 /// </summary> public void CalcPrice() { int totalPrice = 0; foreach (HealthCheckItem2 item in items.Values) { totalPrice += (int)item.Price; } this.Price = totalPrice; }
}
}
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namespace Admin { public partial class btn_add : Form { public btn_add() { InitializeComponent(); } //定义几个检查项目 HealthCheckItem2 thitem, thitem1, thitem2, thitem3, thitem4, thitem5, thitem6, thitem7, thitem8; //定义1个系统默认检查套餐“入学体检” HealthCheckSet2 kset; //保存原始的 AllItems数据 Dictionary<string, HealthCheckItem2> AllItems = new Dictionary<string, HealthCheckItem2>(); //保存套餐中的Item数据 Dictionary<string, HealthCheckItem2> items = new Dictionary<string, HealthCheckItem2>(); //保存项目中的Item数据 Dictionary<string, HealthCheckItem2> head = new Dictionary<string, HealthCheckItem2>();
//使用字典保存套餐集合 public Dictionary<string, HealthCheckSet2> HealthSet = new Dictionary<string, HealthCheckSet2>();
public Dictionary<string, HealthCheckItem2> hast = new Dictionary<string, HealthCheckItem2>();
/// <summary> /// 创建所有检查项目，并保存在AllItems集合中 /// </summary> public void InitItems() { thitem = new HealthCheckItem2("身高", "用于检查身高", 5); thitem1 = new HealthCheckItem2("体重", "用于检查体重", 5); thitem2 = new HealthCheckItem2("视力", "用于检查视力", 15); thitem3 = new HealthCheckItem2("听力", "用于检查听力.", 10); thitem4 = new HealthCheckItem2("肝功能", "用于检查肝功能",10); thitem5 = new HealthCheckItem2("B超", "用于检查B超", 10); thitem6 = new HealthCheckItem2("心电图", "用于检查心电图.", 10); thitem7 = new HealthCheckItem2("血压", "用于检查血压.", 20); thitem8 = new HealthCheckItem2("血常规", "用于检查血常规.", 20); AllItems.Add(thitem.Name ,thitem); AllItems.Add(thitem1.Name, thitem1); AllItems.Add(thitem2.Name, thitem2); AllItems.Add(thitem3.Name, thitem3); AllItems.Add(thitem4.Name, thitem4); AllItems.Add(thitem5.Name, thitem5); AllItems.Add(thitem6.Name, thitem6); AllItems.Add(thitem7.Name, thitem7); AllItems.Add(thitem8.Name, thitem8);
} /// <summary> /// 生成默认套餐数据 /// </summary> public void InitSets() {
//创建1种默认套餐对象 items = new Dictionary<string, HealthCheckItem2>(); items.Add(thitem.Name,thitem); items.Add(thitem1.Name,thitem1); items.Add(thitem2.Name,thitem2); kset = new HealthCheckSet2("贵宾", items); //计算套餐价格 kset.CalcPrice(); this.HealthSet.Add("贵宾", kset);
}
/// <summary> /// 加载体检套餐 /// </summary> public void InitHealthSetList() { //清空套餐项 this.cmb_taocan.Items.Clear(); this.cmb_taocan.Items.Add("请选择"); foreach(string key in this.HealthSet.Keys) { this.cmb_taocan.Items.Add(key);
} this.cmb_taocan.SelectedIndex = 0;
}
/// <summary> /// 窗体加载事件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void Frm_admin2_Load(object sender, EventArgs e) {
//禁止添加列 dgv_list.AutoGenerateColumns = false; this.lbl_name.Text = ""; this.lbl_price.Text = ""; this.btn_insert1.Enabled = false; this.btn_delete.Enabled = false; //初始化所有检查项目 InitItems(); //初始化默认套餐 InitSets(); //加载套餐列表 InitHealthSetList();
}
/// <summary> /// 填充套餐的DataGridView /// </summary> /// <param name="set"></param> public void Updateset(HealthCheckSet2 set) { this.dgv_list.DataSource = new BindingList<HealthCheckItem2>(set.Items.Values.ToList()); } //选择“套餐”下拉列表更改时发生的事件 private void cmb_taocan_SelectedIndexChanged(object sender, EventArgs e) { string setname = this.cmb_taocan.Text; if(setname=="请选择") { this.dgv_list.DataSource = new BindingList<HealthCheckItem2>(); lbl_name.Text = ""; lbl_price.Text = ""; return;
} //设置套餐名称 lbl_name.Text = this.HealthSet[setname].Name; //设置套餐总价 lbl_price.Text = this.HealthSet[setname].Price.ToString(); //更新套餐检查项目 Updateset(HealthSet[setname]); //设置删除按钮为“可用状态” this.btn_delete.Enabled = true;
} //删除的事件 private void btn_delete_Click(object sender, EventArgs e) { string setname = this.cmb_taocan.Text; if(this.dgv_list.SelectedRows.Count==0) { MessageBox.Show("没有删除项","提示",MessageBoxButtons.OK,MessageBoxIcon.Error); return; } //获取选中项的索引 int index = this.dgv_list.SelectedRows[0].Index; //获取选中一行 string key = this.dgv_list.SelectedRows[0].Cells[0].Value.ToString(); //删除检查项 this.HealthSet[setname].Items.Remove(key);
//重新计算价格 this.HealthSet[setname].CalcPrice(); //更新DaaGridView显示 Updateset(HealthSet[setname]); //重设标签显示 this.lbl_name.Text = kset.Name; this.lbl_price.Text = kset.Price.ToString(); MessageBox.Show("删除成功","提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
} //根据是否选择体检项目，设置“添加”显示状态 private void cmb_xianmu_SelectedIndexChanged(object sender, EventArgs e) {
if (this.cmb_xianmu.Text != "请选择") { this.btn_insert1.Enabled = true; } else { this.btn_insert1.Enabled = false;
}
} //添加检查项目 private void btn_insert1_Click(object sender, EventArgs e) { //输入判断 if(this.cmb_xianmu.SelectedIndex==0) { MessageBox.Show("请选择一个项目"); return; } string cmbsetText = this.cmb_taocan.Text; if(cmbsetText=="请选择") { MessageBox.Show("请选择套餐"); return; } //添加操作 int index = this.cmb_xianmu.SelectedIndex - 1; string add = this.cmb_xianmu.Text; if (!this.HealthSet[cmbsetText].Items.Keys.ToList().Contains(add)) { //添加检查项 this.HealthSet[cmbsetText].Items.Add(add,AllItems[add]); //重新计算总价格 this.HealthSet[cmbsetText].CalcPrice(); //更新 Updateset(this.HealthSet[cmbsetText]); //刷新窗体集合名称 this.lbl_name.Text = this.HealthSet[cmbsetText].Name; ////刷新集合价格 this.lbl_price.Text = this.HealthSet[cmbsetText].Price.ToString(); MessageBox.Show("添加成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); } else { MessageBox.Show("该项目已存在","提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
} }
//新建套餐
private void button1_Click(object sender, EventArgs e) {
if (string.IsNullOrEmpty(this.txt_name.Text.Trim())) { MessageBox.Show("请输入套餐名称!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } HealthCheckSet2 Hch = new HealthCheckSet2(); this.HealthSet.Add(this.txt_name.Text.Trim(), Hch); this.InitHealthSetList(); this.cmb_taocan.SelectedIndex = this.HealthSet.Count; MessageBox.Show("添加成功!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
第五章使用Dictionary替换List<t>实现功能