如何在工作流基础上设置自定义活动的通用属性绑定

我有一个名为“参数”的自定义类和一个名为“参数”的泛型集合属性的自定义活动,我想为参数属性的泛型列表中的一个参数设置绑定,我已经尝试了ActuviyBand,但是它不起作用,有没有办法用工作流基础来实现呢?请参见以下代码:

public class Parameter:DependencyObject //A Class
{

    public string Name
    {
        get { return (string)GetValue(NameProperty); }
        set { SetValue(NameProperty, value); }
    }

    // Using a DependencyProperty as the backing store for Name.  This enables animation, styling, binding, etc...
    public static readonly DependencyProperty NameProperty =
    DependencyProperty.Register("Name", typeof(string), typeof(Parameter));

    public string Value
    {
        get { return (string)GetValue(ValueProperty); }
        set { SetValue(ValueProperty, value); }
    }

    // Using a DependencyProperty as the backing store for Value.  This enables animation, styling, binding, etc...
    public static readonly DependencyProperty ValueProperty =
    DependencyProperty.Register("Value", typeof(string), typeof(Parameter));
    }

    //A Custom Activity with generic property

    public partial class Activity1 : System.Workflow.ComponentModel.Activity
    {
        public Activity1()
        {
            InitializeComponent();
        }

    protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)
    {
        return base.Execute(executionContext);
    }

    public List<Parameter> Parameters
    {
        get { return (List<Parameter>)GetValue(ParametersProperty); }
        set { SetValue(ParametersProperty, value); }
    }

    // Using a DependencyProperty as the backing store for Parameters.  This enables animation, styling, binding, etc...
    public static readonly DependencyProperty ParametersProperty =
    DependencyProperty.Register("Parameters", typeof(List<Parameter>), typeof(Activity1));

//设计师代码

   #region Designer generated code

    /// <summary> 
    /// Required method for Designer support - do not modify 
    /// the contents of this method with the code editor.
    /// </summary>
    [System.Diagnostics.DebuggerNonUserCode]
    private void InitializeComponent()
    {
        this.CanModifyActivities = true;
        this.activity12 = new ActivityLibrary1.Activity1();
        this.activity11 = new ActivityLibrary1.Activity1();

        List<Parameter> paras1 = new List<Parameter>();
        paras1.Add(new Parameter() { Name = "a", Value = "a" });
        paras1.Add(new Parameter() { Name = "b", Value = "b" });

        List<Parameter> paras2 = new List<Parameter>();
        paras2.Add(new Parameter() { Name = "c", Value = "c" });
        paras2.Add(new Parameter() { Name = "d", Value = "d" });
        // 
        // activity12
        // 
        this.activity12.Name = "activity12";
        this.activity12.Parameters = paras1;
        // 
        // activity11
        // 
        this.activity11.Name = "activity11";
        this.activity11.Parameters = paras2;


        ActivityBind bind = new ActivityBind();
        bind.Name = activity11.Name;
        bind.Path = "Parameters[0].Value";

        activity12.Parameters[0].SetBinding(Parameter.ValueProperty, bind);
        // 
        // Workflow1
        // 
        this.Activities.Add(this.activity11);
        this.Activities.Add(this.activity12);
        this.Name = "Workflow1";
        this.CanModifyActivities = false;

    }

    #endregion

    private ActivityLibrary1.Activity1 activity12;
    private ActivityLibrary1.Activity1 activity11;