WPF TreeView 全选/反选/子级选中父级也选中

// TreeView 全选/反选/子级选中父级也选中

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<TreeView Grid.Column="0" Grid.Row="1" Grid.ColumnSpan="2" Name="menuTree" Width="240" ItemsSource="{Binding MenuList}" BorderThickness="0" Background="#fff" HorizontalAlignment="Center" VerticalAlignment="Center">
    <TreeView.ItemTemplate>
        <HierarchicalDataTemplate ItemsSource="{Binding Path=MenuChild}">
            <StackPanel>
            <CheckBox Content="{Binding Path=menu.Header}" Margin="0,3"  x:Name="ckName" IsChecked="{Binding Path=IsSelect,Mode=TwoWay}"   Tag="{Binding Path=menu.HeaderCode}"  Checked="CkName_Checked" Unchecked="CkName_Unchecked"></CheckBox>
            </StackPanel>
        </HierarchicalDataTemplate>
    </TreeView.ItemTemplate>

    <TreeView.ItemContainerStyle>
        <Style TargetType="{x:Type TreeViewItem}">
            <Setter Property="IsExpanded" Value="True"/>
            <Setter Property="IsEnabled" Value="True"/>
        </Style>
    </TreeView.ItemContainerStyle>

</TreeView>

 /// <summary>
 /// 选中
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void CkName_Checked(object sender, RoutedEventArgs e)
 {
    
    
     CheckBox ck = sender as CheckBox;
     var list = viewModel.MenuList.ToList();

     for (int i = 0; i < list.Count(); i++)
     {
    
    
         var item = list[i];
         if (ck.Tag.ToString() == item.menu.HeaderCode)
         {
    
    
             item.IsSelect = true;
             item.MenuChild = setBol(item.MenuChild, true, ck.Tag.ToString(), true);
         }
         else
         {
    
    
             item.MenuChild = setBol(item.MenuChild, true, ck.Tag.ToString());
         }
     } 
     gg(ck.Tag.ToString(), list);


 }

 /// <summary>
 /// 修改是否选中
 /// </summary>
 /// <param name="list"></param>
 /// <param name="bol"></param>
 /// <returns></returns>
 public List<MenuParent> setBol(List<MenuParent> list, bool bol, string str, bool dbol = false)
 {
    
    
     var d = list.ToList();
     for (int i = 0; i < d.Count(); i++)
     {
    
    
         if (str == d[i].menu.HeaderCode || dbol)
         {
    
    
             d[i].IsSelect = bol;
             if (d[i].MenuChild != null && d[i].MenuChild.Count > 0)
             {
    
    
                 d[i].MenuChild = setBol(d[i].MenuChild, bol, str, true);
             }
         }
     }
     return d;
 }


 /// <summary>
 /// 不选中
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void CkName_Unchecked(object sender, RoutedEventArgs e)
 {
    
    

     CheckBox ck = sender as CheckBox;
     var list = viewModel.MenuList.ToList();

     for (int i = 0; i < list.Count(); i++)
     {
    
    
         var item = list[i];
         if (ck.Tag.ToString() == item.menu.HeaderCode)
         {
    
    
             item.IsSelect = false;
             item.MenuChild = setBol(item.MenuChild, false, ck.Tag.ToString(), true);
         }
         else
         {
    
    
             item.MenuChild = setBol(item.MenuChild, false, ck.Tag.ToString());
         }
     } 

     gg(ck.Tag.ToString(),list);

 }

 /// <summary>
 ///  
 /// </summary>
 /// <param name="cc"></param>
 /// <param name="list"></param> 
 private void gg(string cc, List<MenuParent> list)
 {
    
    
     List<MenuParent> xin = new List<MenuParent>();
     var r = viewModel.bphList(list.ToList()).Select(x => new MenuParent(x.IsSelect, x.menu)).OrderByDescending(x => x.menu.Remark).ToList();
     var one = r.FirstOrDefault(x=>x.menu.HeaderCode == cc);

     if (string.IsNullOrEmpty(one.menu.HeaderParent))
     {
    
    
         viewModel.MenuList = new System.Collections.ObjectModel.ObservableCollection<MenuParent>(viewModel.BuildTree(r.OrderBy(x => x.menu.Remark).ToList()));
         return;
     }

     xin123 = new List<MenuParent>();
     gg2(one.menu.Header,r);

     for (int i = 0; i < r.Count(); i++)
     {
    
    
         var d = r[i];
         if (xin123.Any(x => x.menu.Header == d.menu.Header))
         {
    
    
             d.IsSelect = xin123.FirstOrDefault(x=>x.menu.Header==d.menu.Header).IsSelect;
         }
     }

     
     viewModel.MenuList = new System.Collections.ObjectModel.ObservableCollection<MenuParent>(viewModel.BuildTree(r.OrderBy(x=>x.menu.Remark).ToList()));
 }


 List<MenuParent> xin123 = new List<MenuParent>();
 private void gg2(string cc, List<MenuParent> list,string s="")
 {
    
    
     var r = list.ToList();
     var one = r.FirstOrDefault(x => x.menu.Header == cc);
     if(!string.IsNullOrEmpty(s) && one.menu.Header != s)
     {
    
    
         if (r.Any(x => x.menu.HeaderParent == one.menu.Header && x.IsSelect))
         {
    
    
             one.IsSelect = true;
         }
         else
         {
    
    
             one.IsSelect = false;
         }


         xin123.Add(one);
         for (int i = 0; i < r.Count(); i++)
         {
    
    
             var d = r[i];
             if (xin123.Any(x => x.menu.Header == d.menu.Header))
             {
    
    
                 d.IsSelect = xin123.FirstOrDefault(x => x.menu.Header == d.menu.Header).IsSelect;
             }
         }
     }
     if (!string.IsNullOrEmpty(one.menu.HeaderParent))
     {
    
    
         gg2(one.menu.HeaderParent,list, cc);
     } 
 }

public class t_menu
{
    
    
    /// <summary>
    /// 
    /// </summary>
    public t_menu()
    {
    
    
    }

    private System.Int32 _id;
    /// <summary>
    /// 
    /// </summary>
    public System.Int32 id {
    
     get {
    
     return this._id; } set {
    
     this._id = value; } }

    private System.String _HeaderCode;
    /// <summary>
    /// 
    /// </summary>
    public System.String HeaderCode {
    
     get {
    
     return this._HeaderCode; } set {
    
     this._HeaderCode = value; } }

    private System.String _Header;
    /// <summary>
    /// 
    /// </summary>
    public System.String Header {
    
     get {
    
     return this._Header; } set {
    
     this._Header = value; } }

    private System.String _HeaderParent;
    /// <summary>
    /// 
    /// </summary>
    public System.String HeaderParent {
    
     get {
    
     return this._HeaderParent; } set {
    
     this._HeaderParent = value; } }

    private System.String _Remark;
    /// <summary>
    /// 
    /// </summary>
    public System.String Remark {
    
     get {
    
     return this._Remark; } set {
    
     this._Remark = value; } }

    private System.SByte? _ToRole;
    /// <summary>
    /// 
    /// </summary>
    public System.SByte? ToRole {
    
     get {
    
     return this._ToRole; } set {
    
     this._ToRole = value; } }

    private System.SByte? _status;
    /// <summary>
    /// 
    /// </summary>
    public System.SByte? status {
    
     get {
    
     return this._status; } set {
    
     this._status = value; } }
}
    public class MenuParent
    {
    
    

        public t_menu menu {
    
     get; set; }

        /// <summary>
        /// 是否选中
        /// </summary>
        public bool IsSelect {
    
     get; set; }

        /// <summary>
        /// 子菜单列表
        /// </summary>
        public List<MenuParent> MenuChild {
    
     get; set; }

        public MenuParent(t_menu menu)
        {
    
    
            this.menu = menu;
            this.IsSelect = false;
            this.MenuChild = new List<MenuParent>();
        }
        public MenuParent(bool IsSelect,t_menu menu)
        {
    
    
            this.menu = menu;
            this.IsSelect = IsSelect;
            this.MenuChild = new List<MenuParent>();
        }
    }

// viewModel
// 初始化时 
List<MenuParent> menuParents = new List<MenuParent>();
MenuList = new ObservableCollection<MenuParent>();
MenuList = new ObservableCollection<MenuParent>(BuildTree(menuParents));


 private ObservableCollection<MenuParent> _menuList = new ObservableCollection<MenuParent>();
 /// <summary>
 /// 菜单列表
 /// </summary>
 public ObservableCollection<MenuParent> MenuList
 {
    
    
     get
     {
    
    
         return _menuList;
     }
     set
     {
    
    
         _menuList = value;
         OnPropertyChanged(() => MenuList);
     }
 }
 /// <summary>
 /// 转为tree结构
 /// </summary>
 /// <param name="flatList"></param>
 /// <returns></returns>
 public List<MenuParent> BuildTree(List<MenuParent> menuItems)
 {
    
    
     // 创建一个字典来存储所有菜单项，以便快速查找  
     var menuDict = new Dictionary<string, MenuParent>();

     // 遍历菜单项，将它们添加到字典中  
     foreach (var item in menuItems)
     {
    
    
         menuDict[item.menu.Header] = item;
     }

     // 创建一个列表来存储根菜单项（HeaderParent 为空或未设置的）  
     var rootMenuItems = new List<MenuParent>();

     // 再次遍历菜单项，构建树形结构  
     foreach (var item in menuItems)
     {
    
    
         // 检查当前项是否有 HeaderParent  
         if (string.IsNullOrEmpty(item.menu.HeaderParent) || !menuDict.ContainsKey(item.menu.HeaderParent))
         {
    
    
             // 如果没有 HeaderParent 或找不到父节点，则它是根节点  
             rootMenuItems.Add(item);
         }
         else
         {
    
    
             // 找到父节点，并将当前项添加到其父节点的 Children 列表中  
             MenuParent parent = menuDict[item.menu.HeaderParent]; 
             parent.MenuChild.Add(item);
         }
     }

     // 返回根菜单项列表  
     return rootMenuItems;
 }

 /// <summary>
 /// 获取list
 /// </summary>
 /// <returns></returns>
 public List<MenuParent> bphList(List<MenuParent> menuParents)
 {
    
    
     List<MenuParent> menuParents1 = new List<MenuParent>();

     if(menuParents != null && menuParents.Count>0)
     {
    
    
         foreach (var item in menuParents)
         {
    
    
             var temp = item;
             if(temp != null && temp.MenuChild!=null && temp.MenuChild.Count>0)
             {
    
    
                 var d = bphList(temp.MenuChild);
                 menuParents1.AddRange(d);
             } 
             menuParents1.Add(item); 
         }
     }

     return menuParents1;
 }