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Old February 13th, 2012, 11:57 AM
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Default FindControl from an userControl inside un Accordion in the base aspx page

I have an aspx page (Default.aspx) with an Accordion control and a button (the page is based on a master page).
Inside one Pane of this Accordion I have an userControl, something like this:


<ucDetails:Details ID="userControlDetails" runat="server" />


Now I need to access of the Enabled property of the button in the aspx page inside my userControl.

Until now I've tried:

Button btnSend1 = (Button) this.NamingContainer.FindControl("btnSendRequest") ;
Button btnSend2 = (Button) Page.Parent.Parent.FindControl("btnSendRequest");
Button btnSend3 = (Button) Page.Parent.FindControl("btnSendRequest");

The first one return NULL
and the others return exception ("Object reference not set of an instance...").

Where I'm wrong?

Thanks in advance.

Old February 13th, 2012, 04:02 PM
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Default test it step by step

Hi Luigi

Try on the page and make sure that it works, then test in next level (in the Pane of an Accordion)

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl.ascx.cs" Inherits="WebUserControl" %>
<asp:Button ID="Btn1" Text="Button In Usercontrol" runat="server" onclick="Btn1_Click" />
<asp:Label ID="ResultLabel" runat="server"></asp:Label>

protected void Btn1_Click(object sender, EventArgs e)
ResultLabel.Text = ((Button)this.NamingContainer.FindControl("btnSend Request")).Text;

<asp:Button ID="btnSendRequest" Text="Send Request Button" runat="server" />
<uc1:WebUserControl ID="WebUserControl1" runat="server" />

it works! so you can test in other situations.

your firstname brings 'Luigi Collina' in my mind!!
happy every time, happy every where

Reza Baiat
Old February 14th, 2012, 04:38 AM
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It gives me a System.NullReferenceException :-(

Who is Luigi Collina?

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