Products

Evoq Content Overview Content Creation Workflow Asset Management Mobile Responsive Personalization Content Analytics SEO Integrations Security Website PerformanceEvoq Engage Overview Community Management  Dashboard  Analytics  Member Profile Gamification Advocate Marketing Community Engagement  Ideas  Answers  Discussions  Groups  Wikis  Events Mobile ReadyDNN Support PackagesEvoq: CMS FeaturesEvoq OnDemandCompare DNN's CMS Products

Solutions

Content Management SystemMulti-Channel PublishingDigital MarketingOnline Community ManagementIntranet Software SolutionOur CustomersPrime

Resources

Test DrivesSchedule A DemoDocumentation CenterWebinarsWhite PapersProduct ManualsRequest PricingData SheetsCase StudiesEvoq Preferred Products Content Management Ecommerce Forms Identity Management and Authentication Site Management Social Themes

Partners

DNN Partners Partner Directory Become a DNN Partner Partner Program Overview  Hosting  Implementation  ISV  Training  Competencies

Community

Participate Ask a Question Forums Community Showcase DNN MVP  Program Overview  Lifetime MVPs  Honorary MVPs Subscribe to DNN Digest Advisory Groups  Awareness Advisory Group  Developer Advisory Group  Partner Advisory Group  Technology Advisory GroupLearn Documentation Wiki Community Blog Video Library Project History Development RoadmapDownload DNN Store Language Packs Manuals Nightly BuildsSecurity Policies Security Center

Blog

About

News Press Releases News Coverage Press KitCareersContact DNN

QA

Ideas Test

New Community Website

Ordinarily, you'd be at the right spot, but we've recently launched a brand new community website... For the community, by the community.

Yay... Take Me to the Community!

Welcome to the DNN Community Forums, your preferred source of online community support for all things related to DNN.
In order to participate you must be a registered DNNizen
HomeHomeDNN Open Source...DNN Open Source...Provider and Extension ForumsProvider and Extension ForumsClientAPIClientAPITab Strip Control - register a postbackeventTab Strip Control - register a postbackevent
Previous
 
Next
New Post
6/10/2007 1:52 AM
 
Christos Christodoulou


Joined: 4/10/2006
Posts: 28

Hello,

I'm using the tab strip control, and i want to find out how i can fire a postback by registering it before loading the tab.

I tried these lines of code to register a postbackevent

line 1: dim deleg as New DotNetNuke.UI.Utilities.ClientAPIPostBackControl.PostBackEvent(AddressOf Dummy_Function)
line 2: DotNetNuke.UI.Utilities.ClientAPI.RegisterPostBackEventHandler(dummy_Control, "dummy", deleg, False)

But i get this error: "Object reference not set to an instance of an object."

with stack trace: at DotNetNuke.UI.Utilities.ClientAPI.RegisterClientVariable(Page objPage, String strVar, String strValue, Boolean blnOverwrite) at DotNetNuke.UI.Utilities.ClientAPI.RegisterPostBackEventHandler(Control objParent, String strEventName, PostBackEvent objDelegate, Boolean blnMultipleHandlers) at DummyForm.Dummy_Tab_SetupDefaults()

I'm really new to this, if someone can point to me to the right direction i would appreciate it

Thanks in advance
 
New Post
6/11/2007 1:34 PM
 
Jon Henning

www.codeendeavors.com
Joined: 3/20/2003
Posts: 1767

I am confused as to what you are trying to solve.   It sounds like you want a callback to occur, before a tab loads.  Are you using the DNN TabStrip or another control.  If DNNTabstrip, what rendering mode are you using?  If I had to take a guess at your error, I'd say you are calling the registerpostbackeventhandler before teh dummy_control is attached to the page.  For more information see the following links.

This document covers the DNNTabstrip.

This document covers client callbacks.
 
 Page 1 of 1
Previous
 
Next
HomeHomeDNN Open Source...DNN Open Source...Provider and Extension ForumsProvider and Extension ForumsClientAPIClientAPITab Strip Control - register a postbackeventTab Strip Control - register a postbackevent


These Forums are dedicated to discussion of DNN Platform and Evoq Solutions.

For the benefit of the community and to protect the integrity of the ecosystem, please observe the following posting guidelines:

  1. No Advertising. This includes promotion of commercial and non-commercial products or services which are not directly related to DNN.
  2. No vendor trolling / poaching. If someone posts about a vendor issue, allow the vendor or other customers to respond. Any post that looks like trolling / poaching will be removed.
  3. Discussion or promotion of DNN Platform product releases under a different brand name are strictly prohibited.
  4. No Flaming or Trolling.
  5. No Profanity, Racism, or Prejudice.
  6. Site Moderators have the final word on approving / removing a thread or post or comment.
  7. English language posting only, please.
What is Liquid Content?
Find Out
What is Liquid Content?
Find Out
What is Liquid Content?
Find Out