为什么未引用我的代码隐藏事件处理程序? [英] Why is my code-behind event handler not referenced?

问题描述

为什么我的后台代码没有效果并且没有到达断点?

Why does my code-behind have no effect and my breakpoint is not reached?

我已经在WebForm1.aspx文件中找到了它:

I've got this in my WebForm1.aspx file:

<asp:checkbox id="ckbxAllGenres" runat="server" Checked="True" OnCheckedChanged="ckbxAllGenres_CheckedChanged" />
<label for="ckbxAllGenres">All</label>
<asp:checkbox id="ckbxAction" runat="server" />
<label for="ckbxAction">Action</label>
<asp:checkbox id="ckbxAdventure" runat="server" />
<label for="ckbxAdventure">Adventure</label>

WebForm1.aspx.cs文件中的事件处理程序为:

The event handler in WebForm1.aspx.cs file is:

protected void ckbxAllGenres_CheckedChanged(object sender, EventArgs e)
{
    bool allGenresChecked = ckbxAllGenres.Checked;
    ckbxAction.Checked = allGenresChecked;
    ckbxAdventure.Checked = allGenresChecked;
    . . .

我在第一行有一个断点(对bool的赋值).

I have a breakpoint on the first line (the assignment to the bool).

当我检查ckbxAllGenres控件时，未达到断点；因此，当然，代码不会运行，什么也不会发生.

The breakpoint is not reached when I check the ckbxAllGenres control; and so, of course, the code does not run, and nothing happens.

的确，事件处理程序指示"0引用"，"0引用".但是为什么会这样呢?

It's true that the event handler indicates "0 references," but why would that be?

WebForm1.aspx的第一行是:

The top line of WebForm1.aspx is:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Flix4Fams_WebForms.WebForm1" %>

推荐答案

自从我使用网络表单已经一年了，但是我认为您在 AutoPostBack =" 复选框:

It's been a year since I've used web forms, but I think you're missing AutoPostBack="true" on the checkbox:

<asp:checkbox 
    id="ckbxAllGenres" 
    runat="server" 
    Checked="True" 
    OnCheckedChanged="ckbxAllGenres_CheckedChanged" 
    AutoPostBack="true" />

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