[DotNetDevelopment] lazy-loading nested ListView control

[Kodiak]

I have a nested Listview inside a parent ListView and I want to load
the nested Listview with the Click event of an imagebutton.  Refer to
the code below.

<asp:ListVew ID="parentListView">
       <asp:ImageButton OnClick="Click" >
        ...
       <asp:ListView ID="childListView">
       ...


How can I lazy-load the child ListView using the ImageButton's Click
event.  I cannot figure out the code and any help is appreciated!