问如何获取应用程序图标栏按钮并自动单击它以进行windows phone 7 ui自动化测试？

EN

public class MyApplicationBarIconButton : Button, IApplicationBarIconButton
    {
        public MyApplicationBarIconButton()
        {    
        }
        public MyApplicationBarIconButton(Uri iconUri,String text)
        {
            IconUri = iconUri;
            Text = text;
        }
        public string Text { get; set; }
        public  event EventHandler Click;
        public Uri IconUri { get; set; }
        public bool IsEnabled { get; set; }
    }