Solved

Can't set tag value using c# codebehind on aspx page

Posted on 2010-11-29
8
640 Views
Last Modified: 2012-05-10
Hi, I have a custom .ascx control and would like to set one of it's properties using code.  In the .aspx I have this:

<uc1:CustomContent ID="bunchOfContent" runat="server" contentPayload='<%# getRegionID() %>' />

In the codebehind I have:

    public partial class Region : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
... things
        }

        public string getRegionID()
        {
            //return "region_" + Request["region"];
            return "thevalueIwant";
        }

However, the value I want is not populated and the code is not invoked (breakpoints are not triggered).

What am I doing wrong?  I've tried various changes like changing the quotes from " to ' to no quotes at all.  Also I've used <%= instead of <%# but no luck.  Thanks!
0
Comment
Question by:Nathan08
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
8 Comments
 
LVL 75

Expert Comment

by:käµfm³d 👽
ID: 34235737
How about this:
// Markup
<uc1:CustomContent ID="bunchOfContent" runat="server" />

// Codebehind
public partial class Region : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        contentPayload = getRegionID();
    }

    public string getRegionID()
    {
        //return "region_" + Request["region"];
        return "thevalueIwant";
    }

Open in new window

0
 
LVL 13

Expert Comment

by:themrrobert
ID: 34235744
try:


<uc1:CustomContent ID="bunchOfContent" runat="server" contentPayload="<%# getRegionID(); %>" />

or 
<uc1:CustomContent ID="bunchOfContent" runat="server" contentPayload="<%= getRegionID(); %>" />

Open in new window

0
 

Author Comment

by:Nathan08
ID: 34235816
Thanks for responses:

kaufmed -> 'contentPayload' is not a known construct in Page_Load (nor is uc1).  So this doesn't seem to work, am I missing a step?  I don't see where this assigns the property to the control?

themrrobert -> Unfortunately this doesn't invoke the code still

Any further help appreciated!
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 75

Expert Comment

by:käµfm³d 👽
ID: 34235838
Did you drag the user control onto the markup surface or the designer surface (the rendered preview)? If you drag it onto the markup surface, it does not add the appropriate control references for some reason. You can manually add them, but I find it simpler to just delete the control and then drag a new copy of the control onto the designer surface.
0
 

Author Comment

by:Nathan08
ID: 34235896
Thanks.  Yes I did, the control operates correctly, it's just that I can't get that tag value with code.  Basically, its a simple CMS type thing where the ID of the control is used to determine the bit of content that is rendered.  So 'startpage' or 'aboutpage' gets the appropriate item based on that ID.

However, ID can't be changed on the fly so I'm trying to create an extra attribute that can be.  Proving harder than I expected!
0
 
LVL 75

Accepted Solution

by:
käµfm³d   👽 earned 500 total points
ID: 34235920
You're right....  I must be tired. This is what the previous should have been:
// Markup
<uc1:CustomContent ID="bunchOfContent" runat="server" />

// Codebehind
public partial class Region : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // Use the control's ID to access the object
        bunchOfContent.contentPayload = getRegionID();
    }

    public string getRegionID()
    {
        //return "region_" + Request["region"];
        return "thevalueIwant";
    }

Open in new window

0
 

Author Closing Comment

by:Nathan08
ID: 34235946
Perfect!  Many thanks!
0
 
LVL 75

Expert Comment

by:käµfm³d 👽
ID: 34235995
NP. Glad to help  :)
0

Featured Post

SharePoint Admin?

Enable Your Employees To Focus On The Core With Intuitive Onscreen Guidance That is With You At The Moment of Need.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

ASP.Net to Oracle Connectivity Recently I had to develop an ASP.NET application connecting to an Oracle database.As I am doing it first time ,I had to solve several problems. This article will help to such developers  to develop an ASP.NET client…
Entity Framework is a powerful tool to help you interact with the DataBase but still doesn't help much when we have a Stored Procedure that returns more than one resultset. The solution takes some of out-of-the-box thinking; read on!
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…

689 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question