寻找事件在ASP.NET处理 [英] Finding events to be processed in ASP.NET

问题描述

在回传，从点击一个ImageButton的，它首先点击

On PostBack, from clicking on an ImageButton, it first hits

protected void Page_Load(object sender, EventArgs e)

然后点击

protected void ImageButton_Click(object sender, EventArgs e)

我的问题是，在我的Page_Load它刷新列表框之前选定的项目可以通过ImageButton_Click进行处理。

My problem is that in my Page_Load it refreshes a ListBox before the selected items can be processed by ImageButton_Click.

有没有办法告诉哪些事件尚未处理的，这样我就可以处理？

Is there a way to tell what events are yet to be processed, so I can handle them?

推荐答案

填充/数据绑定列表框的范围内的Page_Load，回发后不。视图状态将保持在ListBox中的项目之后。

Populate/databind your ListBox within Page_Load only on the first load, not after postback. Viewstate will maintain the items in your ListBox subsequently.

protected void Page_Load(object sender, EventArgs e) {

    if(!IsPostBack) //if not postback
    {
       //populate your listbox
    }

}

下面是页面上的生命周期一个良好的阅读，你就会明白页/儿童控件的事件及其用途的序列/顺序。

Here's a good read on the Page's Lifecycle, you'll understand the sequence/order of page/child-controls' events and their purposes.

http://msdn.microsoft.com/en-us/library/ms178472.aspx

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