c# - 如何从javascript向BHO中注册的对象添加属性？

Question

有没有办法将 javasript 中的属性动态添加到 BHO 中注册的对象？

IE

// javascript
window.bho
window.bho.foo = "New property";

抛出“对象不支持此属性或方法”
解决方案必须适用于 .NET 2.0 Framework

// C#
public class ScriptableObject: IScriptableObject
{
    WebBrowser webBrowser;
    HTMLDocument document;

    public ScriptableObject(WebBrowser browser)
    {
        webBrowser = browser;
        document = webBrowser.Document as HTMLDocument;
    }

   // some methods or properties here
}


public class BHO : IObjectWithSite
{
    ...
    public void OnDownloadComplete()
    {
        document = webBrowser.Document as HTMLDocument;
        window = document.parentWindow as IHTMLWindow2;            
        IScriptableObject so = new ScriptableObject(webBrowser);

        // Adding our custom namespace to JavaScript land.
        PropertyInfo myProp = winExpando.AddProperty("bho");
        myProp.SetValue(winExpando, so, null);
    }

}