要编辑绑定到自定义对象列表的WPF ComboBox项的属性，您可以按照以下步骤进行操作：

1. 创建自定义对象类：

   public class CustomObject
   {
       public string Name { get; set; }
       public string Value { get; set; }
   }
   

2. 在XAML中创建ComboBox控件：

3. 在ViewModel中创建CustomObjects属性和SelectedCustomObject属性：

   public class ViewModel : INotifyPropertyChanged
   {
       public ObservableCollection CustomObjects { get; set; }
       public CustomObject SelectedCustomObject { get; set; }
   
       public ViewModel()
       {
           CustomObjects = new ObservableCollection
           {
               new CustomObject { Name = "Object 1", Value = "Value 1" },
               new CustomObject { Name = "Object 2", Value = "Value 2" },
               new CustomObject { Name = "Object 3", Value = "Value 3" }
           };
       }
   
       // INotifyPropertyChanged implementation
   }
   

4. 在您的窗口或用户控件的代码中设置DataContext：

   public partial class MainWindow : Window
   {
       public MainWindow()
       {
           InitializeComponent();
           DataContext = new ViewModel();
       }
   }
   

现在，您可以在ComboBox中显示CustomObjects的名称，并且选择的项将绑定到SelectedCustomObject属性。您可以通过在ViewModel中处理SelectedCustomObject的更改来对其进行编辑或处理。