如何让TreeView预选作为用户控件的依赖项属性的当前项

<TreeView x:Name="MyTreeView" ItemsSource="{Binding MyDataCollection}" />

<TextBox Text="{Binding ElementName=MyTreeView, Path=SelectedItem.Name}" />

public class MyDataItem
{
    public string Name { get; set; }
    // 其他需要绑定的属性
}

public ObservableCollection<MyDataItem> MyDataCollection { get; set; }

MyDataCollection = new ObservableCollection<MyDataItem>();
// 添加数据项到集合中

// 确保数据项的属性实现了INotifyPropertyChanged接口
public class MyDataItem : INotifyPropertyChanged
{
    private string _name;
    public string Name
    {
        get { return _name; }
        set
        {
            _name = value;
            OnPropertyChanged(nameof(Name));
        }
    }

    // 其他属性的定义和实现

    public event PropertyChangedEventHandler PropertyChanged;
    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}