//创建一个ListBox
ListBox list=new ListBox();
//创建一个ListBoxIem
ListBoxItem item = new ListBoxItem();
//定义ListBoxItem的边框样式 Thickness tick = new Thickness(); tick.Top = 50;
//将样式添加给这个ListBoxItem item.BorderThickness = tick ; //将ListBoxItem添加进ListBox
list.items.add(item);