升级到Sitecore 7.2后未触发按钮单击事件

Question

I have recently upgraded from Sitecore 6.5 to Sitecore 7.2. I have worked through a number of issues, refactored search, etc. However, on pages other than the homepage my <asp:Button /> were not submitting the form due to __doPostback being undefined. To resolve this I added an <asp:ScriptManager /> to my layout and now the javascript fires on click and the form is submitted/reloaded.

The problem I'm having now is that my server-side click event handler is not being fired for any buttons on that page.

Below is my code:

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="Login Page.ascx.cs"
    Inherits="MyProject.layouts.Login.Login_Page" %>

<asp:Button ID="TestButton" runat="server" OnClick="TestButton_OnClick" />

And my codebehind

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace MyProject.layouts.Login
{
    public partial class Login_Page : System.Web.UI.UserControl
    {        
        protected void Page_Load(object sender, EventArgs e)
        {
        }

        protected void TestButton_OnClick(object sender, EventArgs e)
        {
            throw new Exception("Clicked");
        }
    }
}

On click the event is never fired. Any ideas out there? I'm thinking it might be related to the same reason the pages didn't have __doPostback defined.

Answer 1

If you have caching enabled for your sublayout/rendering, then this is the expected behaviour since the rendered HTML is cached and your server side code will not be triggered after first load. Meaning the Page_Load event will not be re-triggered neither will your Click event for your button.

The easiest way to check is if it is a caching issue is to clear the cache (via /sitecore/admin/cache.aspx) and see if your event is triggered. You could also disable the cache in the element by setting cacheHtml="false" . This will help you identify the caching issue, you should fix the underlying issue by disabling caching for that control.