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08.18.2008 at 04:32PM PDT, ID: 23658097
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9.3

Postback error in dinamically created user control

Asked by lgalaz in .Net Editors & IDEs, .NET

Tags: , , ,

Hi experts. Im having a problem with postbacks in dynamically created user controls inside an updatepanel.
I have a page which has a placeholder where i will add a user control depending on the value in a dropdownlist. One of those user controls has a grid, which has paging enabled. The first time i select a value from the dropdownlist the paging works fine, but if i change the selected index of the dropdownlist, the user control might change, when i change it back to the usercontrol that has the grid, the paging stops working for the first attempt i make, i make a second attempt and the suer control repaints itself as if the outside updatepanel was updated (i have  a div in the user control that has its content hiddend and shown, and that div restarts itself) on the third attempt, the paging starts working normally.

What can be happening here?
It seems that some information is persisted among user control loadings. But im really out of ideas on how to troubleshoot this.
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Main page--------------
<updatepanel .... updatemode="conditional">
..
<asp:dropdownlist....>
<table>
  <tr>
   <td colspan="5" style="text-align: left">
      <asp:PlaceHolder ID="phPromotionControl"  runat="server"></asp:PlaceHolder>
'''''
Main Page codebehind---------
    protected void setupPromotionPanelControl(string pControl)
    {
        phPromotionControl.Controls.Clear();
        UserControl promotion = (UserControl)LoadControl("controls/"  
            +  pControl + ".ascx");
        phPromotionControl.Controls.Add(promotion);
    }
 
User control--------------
<div>
  <asp:gridview ...>.... </asp:gridview>
 
Keywords: Postback error in dinamically created u…
Title
1 Invalid postback or arguyment?
2 Postback on Lost Focus
3 postback with multiview
4 .net FormView Dropdownlist control
5 set panel visible without postback
6 Postback question
 
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[+][-]08.18.2008 at 05:30PM PDT, ID: 22256455

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About this solution

Zones: .Net Editors & IDEs, .NET
Tags: Microsoft, Microsoft Visual Studio, 2005, Asp.Net
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Solution Provided By: RedKelvin
Participating Experts: 1
Solution Grade: A
 
 
[+][-]08.19.2008 at 08:25AM PDT, ID: 22260655

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[+][-]08.19.2008 at 09:06AM PDT, ID: 22261129

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

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