this will work:
<ListView>
<x:Code>
<![CDATA[
public void dick(object sender, EventArgs e)
{
Title = DateTime.Now.ToString("T");
}
]]>
</x:Code>
<ListView.ItemContainerStyle>
<Style TargetType="{x:Type ListViewItem}">
<EventSetter Event="MouseEnter" Handler="dick" />
</Style>
</ListView.ItemContainerStyle>
<ListViewItem>first</ListViewItem>
<ListView>second</ListView>
</ListView>