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Find Control problem in visual studio 2005

Last Modified: 2013-11-26
I am changing our website over from using visual studio 2003 to 2005 so basically the code does not really need to change apart from some pathing issues.  I am having a problem with a findcontrol...I have a control call marketingcampain which is on a summary page.  When the user click on the placing order button the code is supposed to pick up the marketing control which consists of a dropdown list and a text box and simply pass the chosen info to the database.  
I try to access the marketing control in the code behin but the control has a value of nothing:

Dim tempMarketingCampaign As New General_MarketingCampaign
tempMarketingCampaign = Me.FindControl("MarketingCampaign1")
tempAdNamesList = tempMarketingCampaign.FindControl("AdNamesList")
tbAddInfo = tempMarketingCampaign.FindControl("tbOther")

I get an error that says object not set to instance of an object.  I am very confused as the code has not actually changed at all and in visual studio 2003 it worked fine.
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Most Valuable Expert 2012
Top Expert 2008

Are you using master pages with 2.0?



I am using master pages with visual studio 2005...does that make a difference?

At the top of the summary page in the code behind it has:

Partial Class Basket_summary
    Inherits System.Web.UI.Page

At the top of the summary page html it has:

<%@ Page Language="VB" MasterPageFile="~/MasterPages/MasterPage.master" AutoEventWireup="false" CodeFile="summary.aspx.vb" Inherits="Basket_summary" title="Untitled Page" %>
<%@ Register Src="../General/MarketingCampaign.ascx" TagName="MarketingCampaign"
    TagPrefix="uc1" %>

At the top of the marketing control in the code behind it has:

Partial Class General_MarketingCampaign
    Inherits System.Web.UI.UserControl

I have moving the control to the same folder that the summary control is in but it didnt make any difference.  I have tried changing partial class to public class and have taken out general in marketing campaign in the code behind and html but nothing seems to make any difference.
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Top Expert 2008
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Do you know any links that will explain it or give examples?  I tried variation of Dim main As ContentPlaceHolder = CType(Master.FindControl("MainContent"), ContentPlaceHolder) and it doesnt work...
Thanks for you help on this.


Okay, I managed to get it to work as follows:

tempMarketingCampaign = Master.FindControl("ContentPlaceHolder1").FindControl("MarketingCampaign1")
 tempAdNamesList = tempMarketingCampaign.FindControl("AdNamesList")
 tbAddInfo = tempMarketingCampaign.FindControl("tbOther")

Thanks for comment :)

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