CWPFTreeView用法实例解析

　　概述
　　TreeView是常用的树状列表，在项目开发中也时常会用到，这节主要讲解treeview在wpf的基本用法！
　　结果演示：
　　代码讲解
　　前台xaml：<UserControl x:Class=＂Caliburn.Micro.Hello.Views.TreeViewView＂ xmlns=＂http://schemas.microsoft.com/winfx/2006/xaml/presentation＂ xmlns:x=＂http://schemas.microsoft.com/winfx/2006/xaml＂ xmlns:mc=＂http://schemas.openxmlformats.org/markup-compatibility/2006＂  xmlns:d=＂http://schemas.microsoft.com/expression/blend/2008＂  xmlns:local=＂clr-namespace:Caliburn.Micro.Hello.Views＂  xmlns:self=＂clr-namespace:Caliburn.Micro.Hello.ViewModels＂  xmlns:dxg=＂http://schemas.devexpress.com/winfx/2008/xaml/grid＂  xmlns:dx=＂http://schemas.devexpress.com/winfx/2008/xaml/core＂ xmlns:cal=＂http://www.caliburnproject.org＂  mc:Ignorable=＂d＂  d:DesignHeight=＂450＂ d:DesignWidth=＂800＂> <Grid> <Grid.RowDefinitions> <RowDefinition Height=＂*＂/> <RowDefinition Height=＂*＂/> Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width=＂*＂/> <ColumnDefinition Width=＂*＂/> Grid.ColumnDefinitions>
　　 <dxg:TreeListControl  ItemsSource=＂{Binding EmployeeDepartments}＂  SelectedItem=＂{Binding CurrentSelectedItem}＂ Grid.Column=＂0＂ > <dxg:TreeListControl.View> <dxg:TreeListView AllowColumnFiltering=＂False＂ AllowConditionalFormattingMenu=＂False＂ AllowFixedColumnMenu=＂False＂ AllowRecursiveNodeChecking=＂True＂ AutoWidth=＂True＂ FetchSublevelChildrenOnExpand=＂False＂ IsColumnMenuEnabled=＂False＂ IsRowCellMenuEnabled=＂True＂ IsTotalSummaryMenuEnabled=＂False＂ KeyFieldName=＂Id＂ ParentFieldName=＂ParentId＂ ShowNodeImages=＂True＂ ShowSearchPanelMode=＂Always＂> dxg:TreeListView> dxg:TreeListControl.View> <dxg:TreeListColumn AllowEditing=＂False＂ FieldName=＂Employees.Name＂ Header=＂{Binding TreeTitle}＂ /> dxg:TreeListControl>
　　 <TreeView Grid.Column=＂1＂ Margin=＂10,15,10,10＂ ItemsSource=＂{Binding EmployeeDepartments}＂> <TreeView.ItemContainerStyle> <Style TargetType=＂{x:Type TreeViewItem}＂ /> TreeView.ItemContainerStyle> <TreeView.ItemTemplate> <HierarchicalDataTemplate DataType=＂{x:Type self:EmployeeDepartment}＂ ItemsSource=＂{Binding Employees}＂> <StackPanel HorizontalAlignment=＂Stretch＂ Orientation=＂Horizontal＂> <CheckBox IsChecked=＂True＂/> <TextBlock VerticalAlignment=＂Center＂ FontSize=＂14＂ Text=＂{Binding Name}＂ TextTrimming=＂CharacterEllipsis＂ /> StackPanel> HierarchicalDataTemplate> TreeView.ItemTemplate> TreeView>  <TreeView Grid.Column=＂0＂ Grid.Row=＂1＂ ItemsSource=＂{Binding EmployeeDepartments}＂> <TreeView.ItemTemplate> <HierarchicalDataTemplate ItemsSource=＂{Binding Employees}＂> <StackPanel> <TextBlock Text=＂{Binding Name}＂/> StackPanel> HierarchicalDataTemplate> TreeView.ItemTemplate> TreeView>
　　 <TreeView Grid.Column=＂1＂ Grid.Row=＂1＂ ItemsSource=＂{Binding nodesCollection}＂> <TreeView.ItemTemplate> <HierarchicalDataTemplate ItemsSource=＂{Binding ChildNodes}＂> <StackPanel HorizontalAlignment=＂Stretch＂ Orientation=＂Horizontal＂>  <CheckBox IsChecked=＂{Binding IsChecked}＂  cal:Message.Attach=＂[Event Click]=[Action CheckBox_Click($source,$eventArgs)]＂ /> <TextBlock  VerticalAlignment=＂Center＂ FontSize=＂14＂ Text=＂{Binding NodeName}＂ TextTrimming=＂CharacterEllipsis＂ /> StackPanel> HierarchicalDataTemplate> TreeView.ItemTemplate> TreeView> Grid>UserControl>
　　后台cs代码：
　　using PropertyChanged;using System.Collections.Generic;using System.Collections.ObjectModel;using System.Windows;using System.Windows.Controls;
　　namespace Caliburn.Micro.Hello.ViewModels{ public class TreeViewViewModel : Screen, IViewModel { public TreeViewViewModel() { DisplayName = ＂TreeView＂; EmployeeDepartments = Departments.GetDepartments();
　　 //方法1 //nodes = new List() //{ // new TreeNode(){ ParentID = 0,NodeID = 1,NodeName = ＂Chapter1＂}, // new TreeNode(){ ParentID = 0,NodeID = 2,NodeName = ＂Chapter2＂}, // new TreeNode(){ ParentID = 0,NodeID = 3,NodeName = ＂Chapter3＂}, // new TreeNode(){ ParentID = 1,NodeID = 4,NodeName = ＂Section1.1＂}, // new TreeNode(){ ParentID = 1,NodeID = 5,NodeName = ＂Section1.2＂}, // new TreeNode(){ ParentID = 2,NodeID = 6,NodeName = ＂Section2.1＂}, // new TreeNode(){ ParentID = 3,NodeID = 7,NodeName = ＂Section3.1＂}, // new TreeNode(){ ParentID = 6,NodeID = 8,NodeName = ＂SubSection2.1.1＂}, // new TreeNode(){ ParentID = 6,NodeID = 9,NodeName = ＂SubSection2.1.2＂}, // new TreeNode(){ ParentID = 2,NodeID = 10,NodeName = ＂Section2.2＂}, // new TreeNode(){ ParentID = 3,NodeID = 11,NodeName = ＂Section3.2＂}, //}; //nodes = getNodes(0,nodes);
　　 //方法2  nodesCollection = new ObservableCollection() { new TreeNode() { NodeName = ＂中国人＂, ChildNodes = new ObservableCollection() { new TreeNode(){ NodeName = ＂李嘉诚＂}, new TreeNode() { NodeName = ＂王健林＂, ChildNodes = new ObservableCollection() { new TreeNode(){ NodeName = ＂68岁＂}, new TreeNode(){ NodeName = ＂一个儿子＂}, } }, } }, new TreeNode() { NodeName = ＂外国人＂, ChildNodes = new ObservableCollection() { new TreeNode() { NodeName = ＂马斯克＂, ChildNodes = new ObservableCollection() { new TreeNode(){ NodeName = ＂51岁＂}, new TreeNode(){ NodeName = ＂10个老婆＂}, } }, } } }; } public List EmployeeDepartments { get; set; }
　　 public List nodes { get; set; } public ObservableCollection nodesCollection { get; set; } //private List getNodes(int parentID, List nodes) //{ // List mainNodes = nodes.Where(x => x.ParentID == parentID).ToList(); // List otherNodes = nodes.Where(x => x.ParentID != parentID).ToList(); // foreach (TreeNode node in mainNodes) // node.ChildNodes = getNodes(node.NodeID, otherNodes); // return mainNodes; //} public void CheckBox_Click(object sender, RoutedEventArgs e) { CheckBox checkBox; if (sender is CheckBox) { checkBox = sender as CheckBox; } else { return; }
　　 //SetIsChecked(nodesCollection); foreach (var childNode in nodesCollection) { //SetIsChecked(childNode, checkBox.IsChecked); SetIsChecked(childNode); } }
　　 //public void SetIsChecked(ObservableCollection childNodes) //{ // foreach (var childNode in childNodes) // { // if(!childNode.IsChecked) // { // foreach (var child in childNode.ChildNodes) // { // child.IsChecked = false; // SetIsChecked(child.ChildNodes); // } // } // else // { // SetIsChecked(childNode.ChildNodes); // } // } //}
　　 public void SetIsChecked(TreeNode treeNode) { foreach (var child in treeNode.ChildNodes) { if (!treeNode.IsChecked) { child.IsChecked = false; } SetIsChecked(child); } }
　　 }
　　 public static class Departments { public static List GetDepartments() { List departments = new List(); departments.Add(new EmployeeDepartment(＂Management＂, new Employee[] { new Employee(0, ＂Gregory S. Price＂) })); departments.Add(new EmployeeDepartment(＂Marketing＂, new Employee[] { new Employee(1, ＂Irma R. Marshall＂), new Employee(2, ＂Brian C. Cowling＂), new Employee(3, ＂Thomas C. Dawson＂), new Employee(4, ＂Bryan R. Henderson＂), })); departments.Add(new EmployeeDepartment(＂Operations＂, new Employee[] { new Employee(5, ＂John C. Powell＂), new Employee(6, ＂Harold S. Brandes＂), new Employee(7, ＂Jan K. Sisk＂), new Employee(8, ＂Sidney L. Holder＂), })); departments.Add(new EmployeeDepartment(＂Production＂, new Employee[] { new Employee(9, ＂Christian P. Laclair＂), new Employee(10, ＂James L. Kelsey＂), new Employee(11, ＂Howard M. Carpenter＂), new Employee(12, ＂Jennifer T. Tapia＂), })); departments.Add(new EmployeeDepartment(＂Finance＂, new Employee[] { new Employee(13, ＂Karen J. Kelly＂), new Employee(14, ＂Judith P. Underhill＂), new Employee(15, ＂Russell E. Belton＂), })); return departments; } }
　　 public class Employee { public Employee(int id, string name) { ID = id; Name = name; } public int ID { get; set; } public string Name { get; set; } } public class EmployeeDepartment { public string Name { get; set; } public ObservableCollection Employees { get; }
　　 public EmployeeDepartment(string name, IEnumerable employees) { Name = name; Employees = new ObservableCollection(employees); } }
　　 [AddINotifyPropertyChangedInterface] public class TreeNode { //public int NodeID { get; set; } //public int ParentID { get; set; } public string NodeName { get; set; } public bool IsChecked { get; set; } public ObservableCollection ChildNodes { get; set; } public TreeNode() { IsChecked = true; ChildNodes = new ObservableCollection(); } }}
　　通过SetIsChecked方法实现了主节点取消勾选后，子节点也跟着去勾选，要勾选子节点，也先得选中主节点.源码下载
　　链接：https://pan.baidu.com/s/1ty500tUFPNGtfnJorqaZ7A
　　提取码：6666