How to access controls in listview's layouttemplate?

How do I set a property of a user control in ListView's LayoutTemplate from the code-behind?

<asp:ListView ...>
<LayoutTemplate>
<myprefix:MyControl id="myControl" ... />
</LayoutTemplate>
...
</asp:ListView>

I want to do this:

myControl.SomeProperty = somevalue;

Please notice that my control is not in ItemTemplate, it is in LayoutTemplate, so it does not exist for all items, it exists only once. So I should be able to access it once, not for every data bound item.