Error: Cannot implicitly convert type 'void' to 'System.Collections.Generic.List'

Question

I am trying to set a property of my .ascx controls from an .aspx using that control.

So in one of my .aspx which has this control in it, I have the

Answer 1

The Add method doesn't return a reference to the list. You have to do this in two steps:

ItemListt.ItemList = new List();
ItemListt.ItemList.Add(item);

Alternatively use a local variable to hold the reference before you put it in the property:

List list = new List();
list.Add(item);
ItemListt.ItemList = list;