对象预览器支持了值类型集合成员的简单预览

WorkBench/Themes/LazyTreeView.xaml.cs

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+using Serein.Library.Enums;
+using Serein.NodeFlow.Base;
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace Serein.WorkBench.Themes
+{
+    /// <summary>
+    /// LazyTreeView.xaml 的交互逻辑
+    /// </summary>
+    public partial class LazyTreeView : UserControl
+    {
+        public ObservableCollection<NodeModelBase> RootNodes { get; set; }
+
+        public LazyTreeView()
+        {
+            InitializeComponent();
+            RootNodes = new ObservableCollection<NodeModelBase>();
+            treeView.DataContext = this;
+        }
+
+        private void treeView_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
+        {
+            if (e.NewValue is NodeModelBase node)
+            {
+                // 在这里设置 Expanded 事件
+                var treeViewItem = (TreeViewItem)treeView.ItemContainerGenerator.ContainerFromItem(node);
+                treeViewItem.Expanded += (s, args) => LoadChildren(node, treeViewItem);
+            }
+        }
+        private void LoadChildren(NodeModelBase node, TreeViewItem treeViewItem)
+        {
+            // 懒加载逻辑
+            if (node.SuccessorNodes.Count > 0)
+            {
+                treeViewItem.Items.Clear();
+                foreach (var child in node.SuccessorNodes[ConnectionType.IsSucceed]) // 根据类型加载子项
+                {
+                    treeViewItem.Items.Add(child);
+                }
+            }
+        }
+    }
+}