使用对用户控制对象的引用List<T>.每次单击该按钮时，将创建这些对象的新实例，并将引用添加到列表中.对象的构造函数应包含初始化组件的所有必要步骤.您还可以添加一个参数来分配当前对象的列表索引.

Use a List<T> of references to your user-control objects. Each time the button is clicked create a new instance of these objects and add the reference to your list. The object''s constructor should contain all necessary steps to initialize the components. You could also add a parameter to assign the List''s index of the current object.