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
<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。
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
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
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 propertybox.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。
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
/// <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
<?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>
