visual studio using old xap

Question

I am debugging my silverlight application. This application reads an xml file to draw some stuff. Everytime I change my xml file, refreshing the page does not display the new results. I have to get back to visual studio and hit Ctrl+F5.

I have added random query string in my xap url

<param name="source" value="ClientBin/SilverlightOrg.xap>?<%=Guid.NewGuid().ToString() %>"/>

but even after this just refreshing the page does not work. Will I get the same problem when I launch the website or is it just a visual studio thing?