在PropertyGrid中带有字符串组合框的C#工作流自定义活动

我想在.NET工作流基础中的自定义活动的属性网格中使用字符串组合框。

虽然自定义活动设计器中的组合框工作正常并绑定到活动属性，但属性网格组合框不绑定到活动

    public class PropertyGridStringComboBox : PropertyValueEditor
{
    public PropertyGridStringComboBox()
    {
        try
        {
            this.InlineEditorTemplate = new DataTemplate();

            FrameworkElementFactory stack = new FrameworkElementFactory(typeof(StackPanel));
            stack.SetValue(StackPanel.OrientationProperty, Orientation.Horizontal);

            FrameworkElementFactory comboBox = new FrameworkElementFactory(typeof(ComboBox));

            Binding binding = new Binding()
            {
                Path = new PropertyPath("Config"),
                Mode = BindingMode.TwoWay,
                UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
            };
            comboBox.SetValue(ComboBox.ItemsSourceProperty, SubnetConfigContainer.GetConfigNames());
            comboBox.SetValue(ComboBox.SelectedValueProperty, binding);
            stack.AppendChild(comboBox);

            this.InlineEditorTemplate.VisualTree = stack;
        }
        catch (Exception ex) { System.Windows.MessageBox.Show(ex.ToString()); }
    }
}

我发现提示，“FrameworkElementFactory”标记为已折旧。但是如何正确地做呢

这是腐蚀性的活动

[Designer(typeof(ConfigSelectorActivityDesigner))]
public sealed class ConfigSelectorActivity : ActivityBase
{
    public string Config { get; set; }

    protected override void Execute(CodeActivityContext context)
    {
        SubnetConfigContainer.Instance.SelectedConfig = this.Config;
    }

    static ConfigSelectorActivity()
    {
        AttributeTableBuilder builder = new AttributeTableBuilder();
        builder.AddCustomAttributes(typeof(ConfigSelectorActivity), "Config", new EditorAttribute(typeof(PropertyGridStringComboBox), typeof(PropertyValueEditor)));
        MetadataStore.AddAttributeTable(builder.CreateTable());
    }

    public static void RegisterMetaData(AttributeTableBuilder builder)
    {
        builder.AddCustomAttributes(typeof(ConfigSelectorActivity), new DesignerAttribute(typeof(ConfigSelectorActivityDesigner)));
    }
}

ItemsSource的类型为

List

。但是PropertyGridStringComboBox中的绑定不起作用

任何人都可以告诉我如何让它工作或一个工作的例子（.NET 4.6.2）

提前谢谢 图卡

我找到了解决办法

路径必须设置为“Value”（在“newpropertypath”处）

Binding binding = new Binding()
        {
            Path = new PropertyPath("Value"),
            Mode = BindingMode.TwoWay,
            UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
        };