SilverLight 2.0 如何使用網頁上的 ActiveX control

請參考
http://pietschsoft.com/post/2008/06/Silverlight-and-JavaScript-Interop-Basics.aspx

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Browser;

namespace DiggSample
{
    public partial class Page : UserControl
    {
        public Page()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            
        }

        private void MyButton_Click(object sender, RoutedEventArgs e)
        {
            MyButton.Content = "按到了!" + DateTime.Now.ToLongTimeString();
            //HtmlPage.Window.Alert(HtmlPage.Document.GetElementById("XCsp").version2);
            ScriptObject myScriptObject = (ScriptObject) HtmlPage.Window.Eval("XCsp;");
            if (myScriptObject != null)
            {
                HtmlPage.Window.Alert((string)myScriptObject.GetProperty("Version2"));
                double bRdrReady = (double)myScriptObject.Invoke("ConnectReader");
                if (bRdrReady == 0)
                {
                    myScriptObject.Invoke("ListReaders");
                    double totalReaders = (double)myScriptObject.GetProperty("inor");
                    if (totalReaders > 0)
                    {
                        for (int i = 0; i < totalReaders; i++)
                        {
                            ReaderList.Items.Add(myScriptObject.GetProperty("caReader"+(i+1).ToString()));
                        }
                    }
                    else
                    {
                        HtmlPage.Window.Alert("請安裝讀卡機");
                    }
                }
                else
                {
                    HtmlPage.Window.Alert("bRdrReader=" + bRdrReady.ToString());
                }
            }

        }
    }
}