textchange事件焦点有关问题`

textchange事件焦点问题````````````````````````````````````请问textchange事件是什么时候触发的?,我只

textchange事件焦点问题````````````````````````````````````
请问textchange事件是什么时候触发的?,我只写一个textchange事件好象根本就不触发,
加了一个txtbox.AutoPostBack=true后,是失去焦点后触发.可不可以当TEXTBOX值一改变就马上触发呢?

[解决办法]
加我