Question

asp.net/ajax: unable to locate root directory on httphandler webpage?!?

Asked by: Goalie3533

Hello.

I'm using DotNetBlogEngine as my infrastructure for an asp.net blog website.  DotNetBlogEngine creates "fake" pages for all blog articles and category pages.  The problem is, when I integrate ajax into one of these "fake" httphandler pages, and then execute the ajax (a button click event in this case), I get errors related to being unable to locate the root directory....

 If you check out my site at http://97.74.54.51/default.aspx (not much to look at.  Just wanted to upload to show the error) , then click the square, blue button on the top right called "Click Here", you'll notice you can click it over and over with no problem.  The content in the blue bar successfully switches back and forth.

Now, however, if you click on the "General" link under "Categories" on the left hand side of the page, this page leads to the error I'm having.  If you click the blue square again on this General page, it works fine the 1st click however the 2nd click should return an invalid image URL when trying to display the original phone advertisement again.  Notice the URL of this page is called "category/General.aspx"?  This page doesn't actually exist.  It's a "fake" page DotNetBlogEngine creates via httphandlers.  Now, if you right click on the invalid image, the URL it displays is "category/images/templateimages/ad.jpg" .  The correct path should not have "category" in it.  

 My imagepath in my image control looks like the following:
ImageUrl="~/Images/TemplateImages/ad.jpg"

Any idea what may be causing this to not look in the root directory?

Thanks.

This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

  • Plus...
  • 30 Day FREE access, no risk, no obligation
  • Collaborate with the world's top tech experts
  • Unlimited access to our exclusive solution database
  • Never be left without tech help again

Subscribe Now

Asked On
2009-02-09 at 13:12:34ID24127222
Topics

Programming for ASP.NET

,

Asynchronous Javascript and XML (AJAX)

Participating Experts
1
Points
0
Comments
3

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

  • "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
  • "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
  • "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Screenshot of Experts Exchange Knowledgebase

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Screenshot of an Article

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Screenshot of Experts Exchange Knowledgebase

Access the answers to your technology questions today.

Subscribe Now

30-day free trial. Register in 60 seconds.

What Makes Experts Exchange Unique?

Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Trusted by the world's most respected brands.

image of each brand's logo

Faithfully serving IT professionals since 1996.

Experts Exchange Logo

Try it out and discover for yourself.

Subscribe Now

30-day free trial. Register in 60 seconds.

Related Solutions

  1. What is ASP.NET AJAX?
    What is ASP.NET AJAX?
  2. ajax
    I would like to get article how to install ajax to the existing asp.net application.
  3. ASP.NET Ajax Deployment
    Do we have to copy any Ajax components somewhere when deploying an ASP.NET Ajax web app? Please advise steps. Thanks.
  4. ASP.NET and AJAX
    Hi, Can anyone please explaine me about the use of AJAX in web application development? Why should I use this AJAX and what are the benefits of using that? How does it related to ASP or ASP.NET?
  5. Ajax in ASP.NET
    Hi all, I am using ASP.NET 2.0 in my web application. 1. I want to use ajax how do I do i do that. What are the steps. 2. I have forms which I need to apply ajax fucntionality. Like a.I have search form for where I show results in datagridview. So I ping the database ev...

Free Tech Articles

  1. WARNING: 5 Reasons why you should NEVER fix a computer for free.
    It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
  2. SCCM OSD Basic troubleshooting
    SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
  3. Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
    This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
  4. Create a Win7 Gadget
    This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
  5. Outlook continually prompting for username and password
    There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
  6. Backup Exchange 2010 Information Store using Windows Backup
    There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...

Cloud Class Webinars

  1. Avoiding Bugs in Microsoft Access
    Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
  2. Top 10 Best New Features in Visio 2010
    Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
  3. IT Consultant Business Secrets Revealed
    Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
  4. Disaster Recovery and Business Continuity
    Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
  5. Organize Your Visio Diagrams with Containers and Lists
    Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
  6. How to Us Objects, Properties, Events and Methods in Microsoft Access
    Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

Join the Community

Answers

 

by: lotusnotesnewbiePosted on 2009-02-10 at 00:08:32ID: 23598256

Could you tell what script you are writing in Click Here? Are you changing the ImageURL manually anywhere in the code?

 

by: Goalie3533Posted on 2009-02-10 at 19:19:58ID: 23608014

Hi lotusnotesnewbie.  Thanks for the reply.

I've attached the code I use to execute this (also included my scriptmanager).  Strange thing is I'm not doing too many crazy things.  I just basically have two panels.  One's always visible & the other's invisible when the button (lnkOpen_Close) get clicked.

I'd greatly appreciate any extra help or advice you can offer.

Thanks again.

         <asp:ScriptManager 
            ID="ScriptManager1" 
            runat="server" 
            EnablePartialRendering="true" 
            LoadScriptsBeforeUI="false" 
            ScriptMode="Release" />
 
<asp:LinkButton ID="lnkOpenClose" runat="server" OnClick="lnkOpenClose_Click" Width="136" Height="145" CssClass="OpenCloseButton"></asp:LinkButton>
 
<asp:UpdatePanel ID="OnPageMenuUpdatePanel" runat="server" UpdateMode="Conditional">
<Triggers>
     <asp:AsyncPostBackTrigger
          ControlID="lnkOpenClose"
          EventName="Click" />                        
</Triggers>  
<ContentTemplate>
     <asp:Panel ID="pnlDefault" runat="server" Visible="true">
         <table width="100%">
              <tr>
                   <td align="center" valign="middle">
                        <asp:Image ID="imgAd" runat="server"    
                        ImageUrl="~/images/templateimages/ad.jpg" />
                   </td>
              </tr>
         </table>
     </asp:Panel>                                                    
     <asp:Panel ID="pnlMenuOptions" runat="server" Visible="false">
            ....PANEL CONTENT HERE....          
     </asp:Panel>
 
------------------------------------------
c# code:
    protected void lnkOpenClose_Click(object sender, EventArgs e)
    {
        if (pnlMenuOptions.Visible == true)
        {
              pnlMenuOptions.Visible = false;
              pnlDefault.Visible = true;
        }
        else
        {
              pnlMenuOptions.Visible = true;                           
              pnlDefault.Visible = false;
        }
     }
                                              
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:
45:

Select allOpen in new window

 

by: Goalie3533Posted on 2009-02-14 at 21:04:35ID: 23643677

I was able to resolve this error with a solution from someone else.  Here's the solution they posted:

I was able to reproduce the problem you're having on my local machine.

The problem is that when you're on the category page, the first time you do an UpdatePanel button click, the async postback is correctly being done to "category/BlogEngineNET.aspx", but the response coming back to the page includes a new 'formAction' with a value like '../default.aspx?id=19770e74-9ec9-4cde-b2ab-e5051aaaf348'.  Then the next time you do an UpdatePanel button click, the async postback is being incorrectly done to ../default.aspx?id=19770e74-9ec9-4cde-b2ab-e5051aaaf348.

I did this Google search and found one solution that solved the problem (there may be other solutions too -- didn't search for very long).  The solution I found was here.  If you add JeffreyZhao's code somewhere in your page, it fixes it so the async postbacks are done to the correct url.  I added his code right before the closing <body> tag.

<script type="text/javascript">
//<![CDATA[
    Sys.Application.add_load(function()
    {
        var form = Sys.WebForms.PageRequestManager.getInstance()._form;
        form._initialAction = form.action = window.location.href;
    });
//]]>    
</script>  

20120131-EE-VQP-002

3 Ways to Join

30-Day Free Trial

The Experts

98% positive feedback on 31,087 answers since March 2000. angeliii is a Microsoft Most Valuable Professional for his work with MS SQL Server & Develoment.

He has also proven his knowledge of Visual Basic Programming, PHP Scripting and Oracle Databases.

The Experts

97% positive feedback on 10,752 answers since July 2000. lrmoore has more than 18 years experience in the networking industry.

The six-time Mircosoft MVPs specialties include firewalls, virtual private networking, and network management.

Testimonials

"...and excellent source for support... Kind of like having your very own IT dept." Electriciansnet

Testimonials

"I was apprehensive at signing up at first. However... it has already made my life as an IT administrator much easier." JaCrews

Testimonials

"WOW! You guys have great, active, and knowledgeable people on here." moore50

Business Clients

Business Clients

In the Press

"If you’ve got a question... Experts Exchange can supply an answer.”

In the Press

"...an invaluable aid for both IT professionals and those who require tech support."

In the Press

"where IT professionals provide quick answers on just about any topic"

Business Account Plans

Loading Advertisement...