先在窗体中添加命名空间的引用xmlns:models="clr-namespace:WpfApp5.Models"

<TreeView  x:Name="treeView"  ItemsSource="{Binding NavMenus}" Width="200px" >
    <TreeView.Resources>
        <HierarchicalDataTemplate DataType="{x:Type models:NavMenuModel}"   ItemsSource="{Binding ChildMenus}">
            <TextBlock Text="{Binding MenuName}" Margin="3 2" />
        </HierarchicalDataTemplate>
        <DataTemplate DataType="{x:Type models:MenuModel}">
            <TextBlock  Text="{Binding MenuName}"  Margin="3 2"   />
        </DataTemplate>
    </TreeView.Resources>
</TreeView>

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WpfApp5.Models
{
    public class NavMenuModel : MenuModel
    {
        public NavMenuModel()
        {
            ChildMenus = new ObservableCollection<MenuModel>();
        }
        public ObservableCollection<MenuModel> ChildMenus { get; }
    }
    public class MenuModel
    {
        public int Id { get; set; }

        public int ParentId { get; set; }

        public string MenuName { get; set; }
        public MenuModel()
        {
        }
        public MenuModel(int menuId, string menuName, int parentMenuId, params MenuModel[] subItems)
        {
            this.Id = menuId;
            this.MenuName = menuName;
            this.ParentId = parentMenuId;
        }
    }
}

public MainWindowModel() {
    LeftMenuViewModel();
}

[ObservableProperty]
public ObservableCollection<NavMenuModel> navMenus;

public void LeftMenuViewModel()
{
    NavMenus = new ObservableCollection<NavMenuModel>();
    var menu = new NavMenuModel() { Id = 1, MenuName = "Chapter 1" };

    var subMenu = new NavMenuModel() { Id = 11, MenuName = "Chapter 1.1", ParentId = 1 };
    subMenu.ChildMenus.Add(new MenuModel() { Id = 111, MenuName = "Chapter 1.1.1", ParentId = 11 });
    menu.ChildMenus.Add(subMenu);

    NavMenus.Add(menu);
    var m2 = new NavMenuModel() { Id = 2, MenuName = "Chapter 2" };

    var subMenu2 = new NavMenuModel() { Id = 21, MenuName = "Chapter 2.1", ParentId = 1 };

    m2.ChildMenus.Add(subMenu2);
    NavMenus.Add(m2);
    NavMenus.Add(new NavMenuModel() { Id = 3, MenuName = "Chapter 3" });


}

• 本文标题： materialdesign之Tree动态加载
• 文章分类：【WinForm/WPF】
• 非特殊说明，本文版权归【胡同里的砖头】个人博客 所有，转载请注明出处.

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