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
Solved

Cant find a label control in the code behind

Posted on 2011-03-23
4
486 Views
Last Modified: 2012-05-11
I have default.aspx page and default.aspx.cs page. I just added a label (UserName) to my default.aspx page and tried to set the text of that label in the page_load method in the code behind. I get a compilation error: UserName does not exist in the current context. This seems to be the simplest change but is not working. Please check my code and advise change.

Thank You.

<%@ Page Language="C#" MasterPageFile="MyMaster.master" AutoEventWireup="true"
    CodeFile="Default.aspx.cs" Inherits="_Default" EnableViewState="true" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit"%>

<div id="simple">
                                <table>
                                    <tr>
                                        <td>
                                            <asp:Panel ID="panelSimple" CssClass="float_left" runat="server" GroupingText="User"
                                                EnableViewState="false">
                                                <table>
                                                <tr>
                                                <td>
                                                    User Name: <asp:Label ID = "UserName" runat = "server"></asp:Label>
                                                </td>
</tr>
...
</table>
</Panle>
..
...
</td>
</tr>
</table>
</div>

Open in new window


public partial class _Default : MyUserInformation
{
protected void Page_Load(object sender, EventArgs e)
    {
        string UserRole = this.MuUserRole;
        UserName.Text = this.MyUserRole;
        //this.UserName.Text = this.MyUserRole;

...

}

}

Open in new window

0
Comment
Question by:patd1
  • 2
4 Comments
 
LVL 20

Expert Comment

by:Daniel Van Der Werken
ID: 35201449
Make sure your Default.aspx.designer.cs file has something like this in it:

        /// <summary>
        /// UserName control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.WebControls.Label UserName;
0
 
LVL 7

Accepted Solution

by:
JosephEricDavis earned 500 total points
ID: 35201465
Sometimes this happens when visual studio fails to update the designer file associated with the aspx page and the code behind with the information about your control when you make the change.  The designer file contains information that tells the code behind file what is available on the aspx page.  I've have often fixed this problem in the past by doing the following...

1) Delete the associated designer file.  In your case it would be 'Default.aspx.designer.vb'.
2) Right Click on Default.aspx and choose 'Convert to web application'.
3) You will be prompted with a message that tells you that it will create a designer file and a code behind file.  You will click yes.

Don't worry about the code behind file being overwritten.  That won't happen.  It will see that you already have one and leave it alone.  the designer file will be recreated and you should be able to reference your control.

Why does this happen?  Just a little glitch in visual studio.  But this is a known fix.
0
 

Author Comment

by:patd1
ID: 35201483
Thank for your reply. I just noticed that there were two defaults in solution. I deleted one and it works now.

Thank You.
0
 
LVL 7

Expert Comment

by:JosephEricDavis
ID: 35693646
Are you going to close this question?
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
defining NULL or 0 10 44
Convert Select to DropDownListFor MVC 5 2 30
Function after success of Jquery/AJAX action 9 28
"Emulate" TAB key when press Enter Key 3 46
We all know that functional code is the leg that any good program stands on when it comes right down to it, however, if your program lacks a good user interface your product may not have the appeal needed to keep your customers happy. This issue can…
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…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

856 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