解决TreeView的TreeView_SelectedItemChanged事件被多次调用的问题

DMS.WPF/ViewModels/Items/OpcUaNodeItemViewModel.cs

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+using CommunityToolkit.Mvvm.ComponentModel;
+using DMS.Infrastructure.Models;
+using Opc.Ua;
+using System.Collections.ObjectModel;
+
+namespace DMS.WPF.ViewModels.Items
+{
+    /// <summary>
+    /// OPC UA节点的视图模型。
+    /// </summary>
+    public partial class OpcUaNodeItemViewModel : ObservableObject
+    {
+
+        [ObservableProperty]
+        private NodeId? _nodeId;
+
+        [ObservableProperty]
+        private string? _displayName;
+
+        [ObservableProperty]
+        private NodeClass _nodeClass;
+
+        [ObservableProperty]
+        private object? _value;
+
+        [ObservableProperty]
+        private OpcUaNodeItemViewModel? _parentNode;
+
+        [ObservableProperty]
+        private ObservableCollection<OpcUaNodeItemViewModel> _children = new ObservableCollection<OpcUaNodeItemViewModel>();
+
+        [ObservableProperty]
+        private bool _isExpanded;
+
+        [ObservableProperty]
+        private bool _isSelected;
+
+        /// <summary>
+        /// 默认构造函数（用于设计时支持）。
+        /// </summary>
+        public OpcUaNodeItemViewModel()
+        {
+            // 设计时数据支持
+           
+        }
+        
+      
+    }
+}