ImageButton的事件不更新面板内发射 [英] ImageButton event not firing inside Update Panel

问题描述

这是一个排序跟进我的问题在这里：

This is sort of a follow-up to my question here:

<一个href=\"http://stackoverflow.com/questions/534045/asplabel-is-not-shown-when-visible-is-set-to-true\">Asp:Label可见，当设置为true，不显示？

在上面的问题，我曾在这里的知名度没有被设置为false，因为它们在的UpdatePanel 不是一些控件。有一次，我把一个里面的UpdatePanel控件，能见度来回切换的工作，但是这已经引起了我的另一个问题。我有一个的ImageButton 的出口脱颖而出。当按钮在的UpdatePanel 不是，点击触发的事件，但现在，我把它放在一个的UpdatePanel 里面，单击事件不火。

In the above question, I had a few controls where the visibility was not being set to false because they were not in an UpdatePanel. Once I put the controls inside an UpdatePanel, the toggling of visibility worked, but this has caused me another problem. I have an ImageButton that exports to excel. When the button was not in an UpdatePanel, the click event fired, but now that I put it inside an UpdatePanel, the click event does not fire.

我也有正常工作下拉。我想它是与事实，即的ImageButton 不具有的AutoPostBack 属性。

I also have a dropdown which works fine. I am thinking it has something to do with the fact that the ImageButton does not have an AutoPostBack property.

推荐答案

请确保您有关联的图像按钮就在UpdatePanel一个PostBackTrigger。如果你正在使用类似的东西来马特Berseth的方法导出到Excel ，你必须有这个触发器的出口工作。

Make sure that you have associated the Image Button to a PostBackTrigger on the UpdatePanel. If you are exporting to Excel using something similar to Matt Berseth's method, you have to have this trigger for the export to work.

<asp:PostBackTrigger ControlID="ImageButton1"/>

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