我们在Asp.Net开发过程中，有时候为了开发的需要，或达到一定的效果，我们会才取动态加载用户控件的方法来实现，动态加载用户控件，可以在同一个页面里面，根据不同的情况显示不同的内容，使我们在开发省时省力。(We are in the process of developing Asp.Net, sometimes in order to develop needs, or to achieve a certain effect, we will take the method of dynamically loaded user controls to achieve dynamic loading, user control, can be on the same page, according to different circumstances show different content, make our effort in the)