到业务对象显示文本的UltraTree绑定

Question

我正在将UltraTree控件（版本10.3）绑定到自定义数据源，如下所示：

public void Populate(List<FilterDimension> data)
{
    DataBindings.Clear();
    DataSource = data;
    Nodes[0].DataColumnSetResolved.NodeTextColumn = Nodes[0].DataColumnSetResolved.Columns["DisplayText"];
}

我的期望是，更改任何绑定的FilterDimension对象的DisplayText属性将导致UltraTree节点的文本更新。事实上，树中的文本不会更新，PropertyChanged事件保持为null，这表明UltraTree甚至没有侦听此通知。如何让UltraTree侦听FilterDimension中的属性更改？

以下是FilterDimension:的相关代码

internal class FilterDimension : INotifyPropertyChanged
{
    private string _displayText = null;
    private string _name = null;
    private BindingList<string> _values = new BindingList<string>();
    /// <summary>
    /// Gets or sets the display friendly name.
    /// </summary>
    public string Name
    {
        get { return _name; }
        set
        {
            _name = value;
            FirePropertyChangedNotification("Name");
            if (_displayText == null) { FirePropertyChangedNotification("DisplayText"); }
        }
    }
    /// <summary>
    /// Gets or sets the display text that is used in TreeView nodes.  When null, uses the Name.
    /// </summary>
    public string DisplayText
    {
        get { return _displayText ?? Name; }
        set { _displayText = value; FirePropertyChangedNotification("DisplayText"); }
    }
    /// <summary>
    /// Gets a read/write list of values.  Is never null.
    /// </summary>
    public BindingList<string> Values
    {
        get { return _values; }
        set { _values = value ?? new BindingList<string>(); }
    }
    #region Events
    public event PropertyChangedEventHandler PropertyChanged;
    protected void FirePropertyChangedNotification(string propertyName)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }
    #endregion
}

Answer 1

原来我只需要更改为BindingList<FilterDimension>而不是List<FilterDimension。。。我完全没有注意到控件期望通知从列表中弹出。