These days have a few people asking similar questions, "Dynamic loading controls, why can't the control event not trigger?", The problem is that they are all
if (! ispostback) {// Dynamic Generation or Load Control / / Perhaps the Connection Control Event Processing Function / / Add to the Controls} of the Parent Control
Generate or load dynamic controls. When the control triggered, postback to the server side, ISPOSTBACK == True, these controls are not regenerated, how can I trigger an event? So the answer is that when you need to dynamically generate or load the control, you should do it outside of if (! Ispostback). I ask why I want to do it within if (! Ispostback)? The answer is that I want to generate it once, just like the ASPX page.
