title: user-control to nested usercontrol communication in asp.net
body: <p>I have a ProductBox.ascx user control which I use as ItemTemplate for a DataList as i have to repeat it.Now that datalist in inside a seperate user control ProductGrid.ascx.There is a third usercontrol ProductPopUp.ascx.All these controls are on page User.aspx.</p>
  
  <p>I want to access ProductBox.ascx from ProductPopUp.ascx. I want a loosely coupled solution to it.</p>
  
  <p>Please mind ProductBox.ascx is inside other usercontrol</p>