点菜吧——随便点 C#生成套餐

前言

一到食堂发现有多种选择，但是有一个固定的套路，只能是一个荤，二个小荤，菜品数量也不少，任君选择，如果是一个选择困难症，就有点烦了，所以出品这个自动生成套餐软件。各位老板可以选菜了，还可以拆除一些不想要的菜，不勾选的菜就不会被选择。

一、效果展示

二、代码实现

1、WPF前台代码

html 复制代码

<StackPanel x:Name="OptionalMenu" Orientation="Horizontal" Grid.RowSpan="2">
    <GroupBox Header="组别1" x:Name="group1" Margin="0,5,50,0" FontSize="20">
        <ScrollViewer VerticalScrollBarVisibility="Auto" >
            <StackPanel x:Name="groupPanel1"  />
        </ScrollViewer>
       
    </GroupBox>
    <GroupBox Header="组别2" x:Name="group2" Margin="0,5,50,0" FontSize="20">
        <ScrollViewer x:Name="scrList" Margin="0" VerticalScrollBarVisibility="Auto"  >
            <StackPanel x:Name="groupPanel2">

            </StackPanel>
        </ScrollViewer>
        
    </GroupBox>
</StackPanel>

<Button Grid.Column="1" Height="30" Width="100" Click="Button_Click" Background="Cyan" FontSize="20"
        Foreground="ForestGreen">选择</Button>
<RichTextBox Grid.Column="1" Grid.Row="1" Background="BlanchedAlmond" Name="logInfo" FontSize="18">
    
</RichTextBox>

2、后台业务

1）、初始化数据

主要是从XML加载菜单，这个XML后期可以根据实际情况进行调整。

cs 复制代码

public void InitToolInfo(string filename)
{

    XmlDocument doc = new XmlDocument();
    doc.Load(filename);
    XmlNode xn = doc.SelectSingleNode("Mean");//要读取xml子目录路径
    XmlNodeList xnl = xn.ChildNodes;
    foreach (var item in xnl)
    {
        string sts = "";
        XmlElement xe = (XmlElement)item;
        sts = xe.GetAttribute("id");
        XmlNodeList xnl0 = xe.ChildNodes;
        List<MeanItem> newList = new List<MeanItem>();
        for (int i = 0; i < xnl0.Count; i++)
        {
            string info = xnl0.Item(i).InnerText;
            MeanItem data = new MeanItem(info,sts);
            
            newList.Add(data);

        }
        mainMeanColls[sts] = newList;
    }
}

2）、绑定控件与数据源

cs 复制代码

private void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
    keys = mainMeanColls.Keys.ToArray();
    if (keys.Length!=2)
    {
        MessageBox.Show("菜单加载异常！");
        return;
    }
    group1.Header = keys[0];
    foreach (var item in mainMeanColls[keys[0]])
    {
        CheckBox checkBox = new CheckBox();
        checkBox.Style =(Style) this.FindResource("ckbStyle");
        checkBox.Content = item.Name;
        LinkContrToObj(checkBox, item);
        groupPanel1.Children.Add(checkBox);
    }
    group2.Header = keys[1];

    foreach (var item in mainMeanColls[keys[1]])
    {
        CheckBox checkBox = new CheckBox();
        checkBox.Style = (Style)this.FindResource("ckbStyle");
        checkBox.Content = item.Name;

        LinkContrToObj(checkBox, item);

        groupPanel2.Children.Add(checkBox);
    }
}

3）、筛选框与源关联

cs 复制代码

 private void LinkContrToObj(CheckBox box,MeanItem obj)
 {
     var myBinding = new Binding("IsHave")
     {
         Source = obj
     };

     // Bind the data source to the TextBox control's Text dependency property
     box.SetBinding(CheckBox.IsCheckedProperty, myBinding);
 }

4）、选菜逻辑

当然有心的同学可能会发现一个问题，这个选择一个菜品与上一个不重复的逻辑有点哪啥了，可以考虑先剔除上菜单中的一个菜品，再去选择这样就发型Whie循环了。

cs 复制代码

 private void GetResult()
 {
     string res1 = ExecuChoose(mainMeanColls[keys[0]].Where(t => t.IsHave == true).ToList(),1);
     string res2 = ExecuChoose(mainMeanColls[keys[1]].Where(t => t.IsHave == true).ToList(),2);
     string res3 = ExecuChoose(mainMeanColls[keys[1]].Where(t => t.IsHave == true).ToList(),3);
     while (res2==res3)
     {
         res3 = ExecuChoose(mainMeanColls[keys[1]].Where(t => t.IsHave == true).ToList(), 3);
     }
     string res4 = ExecuChoose(mainMeanColls[keys[1]].Where(t => t.IsHave == true).ToList(),4);
     while (res4 == res2||res4==res3)
     {
         res4 = ExecuChoose(mainMeanColls[keys[1]].Where(t => t.IsHave == true).ToList(), 4);
     }
     OutInfo($"结果>>：{keys[0]}-{res1};{keys[1]}-{res2},{res3},{res4}");
 }

 private string ExecuChoose(List<MeanItem> items,int num)
 {
     Random random = new Random(int.Parse(DateTime.Now.ToString("HHmmssfff"))+num);
     int a = random.Next(1, items.Count);
     return items[a - 1].Name;
 }

5）、数据结构

cs 复制代码

    /// <summary>
    /// 菜单节点项
    /// </summary>
    internal class MeanItem : INotifyPropertyChanged
    {
        public string Name { get; set; }
        private bool isHave;

        public bool IsHave
        {
            get => isHave;
            set
            {
                if (value == isHave)
                {
                    return;
                }
                isHave = value;
                OnPropertyChanged("IsHave");
            }
        }

        public string GroupName { get; set; }

        public MeanItem()
        {
            IsHave = true;
        }

        public MeanItem(string name, string groupName) : this()
        {
            this.Name = name;
            this.GroupName = groupName;
        }

        public MeanItem(string name, bool isHave, string groupName)
            : this(name, groupName)
        {
            this.IsHave = isHave;
        }

        public event PropertyChangedEventHandler PropertyChanged;

        protected void OnPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));
            }
        }
    }

6）、XML菜单配置

html 复制代码

<?xml version="1.0" encoding="utf-8" ?>

<Mean>
	<group id="大荤">
		<item >土豆牛肉</item>
		<item >红烧鸭块</item>
		<item >梅干菜肉</item>
		<item >狮子头</item>
		<item >蛋饺</item>
		<item >凉拌猪头肉</item>
		<item >口水鸡</item>
		<item >炒猪肝</item>
		<item >回锅肉</item>
		<item >尖椒鸡丁</item>
		<item >青椒猪肚</item>
		<item >排骨</item>
		<item >虾</item>
		<item >香肠</item>
	</group>
	<group id="小荤">
		<item >凉拌豆皮</item>
		<item >凉拌海带</item>
		<item >皮蛋豆腐</item>
		<item >凉拌粉皮</item>
		<item >凉拌黄瓜</item>
		<item >雪菜蚕豆</item>
		<item >红烧豆腐</item>
		<item >毛豆肉丝</item>
		<item >花菜</item>
		<item >竹笋肉丝</item>
		<item >豆芽粉丝</item>
		<item >海鲜菇肉丝</item>
		<item >西葫芦肉丝</item>
		<item >土豆丝</item>
		<item >青菜</item>
		<item >尖椒炒蛋</item>
		<item >芹菜肉丝</item>
		<item >韭菜炒蛋</item>
		<item >包菜</item>
		<item >番茄炒蛋</item>
		<item >凉拌木耳</item>
		<item >青椒香干</item>
		<item >青菜</item>
		<item >尖椒炒蛋</item>
		<item >芹菜肉丝</item>
		<item >韭菜炒蛋</item>
		<item >包菜</item>
		<item >番茄炒蛋</item>
		<item >凉拌木耳</item>
		<item >青椒香干</item>
	</group>
</Mean>