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// TreeView 全选/反选/子级选中父级也选中 <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; } 