Silverlight UserControl

Question

Hi,
I wrote a class inherting from canvas. I added a child inside ItemTemplate.I am having a linkbutton as child. I added it in Page.xaml as
<parent>
<my:DataPoint Text="30 Members" Link="http://www.zsl.com" ImageUrl="../images/chat.png"></my:DataPoint>
</parent>
What i want now is,if i change the text or link value it should reflect in design view. Any Idea about this!