Databases
StackOverflow2013
Postsdbo
POCode-behind page cannot "see" any items/controls declared in the aspx page
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POCode-behind page cannot "see" any items/controls declared in the aspx page
    primarykey
    data
    text
    <p>Here's a my Default.aspx page (with unnecessary details excised):</p> <pre><code> &lt;asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"&gt; &lt;div id="login"&gt; &lt;!-- a bunch of markup has been removed, so this html will appear wrong and not valid, but it actually is --&gt; &lt;table align="center" width="80%" cellpadding="0" cellspacing="0" class="loginBg"&gt; &lt;tr&gt; &lt;td colspan="2"&gt;&lt;img src="images/Login_top.jpg" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;asp:Panel runat="server" ID="pnlLoginIn"&gt; &lt;tr&gt; &lt;td style="padding-left:20px;"&gt;Username&lt;/td&gt; &lt;td style="padding-right:15px;" align="right"&gt;&lt;asp:TextBox id="txtUsername" runat="server" /&gt;&lt;/td&gt; &lt;asp:RequiredFieldValidator runat="server" ID="rfvUserName" ErrorMessage="*" ControlToValidate="txtUsername" ValidationGroup="credentials" Display="Dynamic" /&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td style="padding-left:20px;"&gt;Password&lt;/td&gt; &lt;td style="padding-right:15px;" align="right"&gt;&lt;asp:TextBox ID="txtPassword" TextMode="Password" runat="server" /&gt;&lt;/td&gt; &lt;asp:RequiredFieldValidator runat="server" ID="rfvPassword" ErrorMessage="*" ControlToValidate="txtPassword" ValidationGroup="credentials" Display="Dynamic" /&gt; &lt;/tr&gt; &lt;!-- BUT THE PANEL IS HERE?! --&gt; &lt;asp:Panel ID="pnlInvalidCredentials" runat="server"&gt; &lt;tr&gt; &lt;td colspan="2" align="center" style="color: Red;"&gt;&lt;asp:Literal runat="server" ID="litInvalidCredentials" Text="Invalid Username or Password" /&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/asp:Panel&gt; &lt;!-- more code has been removed down here...I just left the block commented in where the pnlInvalidCredential lives --&gt; &lt;/asp:Content&gt; </code></pre> <p>Here's the code-behind (with unnecessary details excised):</p> <pre><code>namespace webapp { public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { (webapp.MasterPages.MasterPage)Page.Master).headerImage = "default"; this.Master.headerImage = "default"; if (!Page.IsPostBack) { this.pnlInvalidCredentials.Visible = false; // error is here this.BindPressRoomItem(); } } } } </code></pre> <p>This page/code-behind is top level, it's not it any folder or anything. Also this project is an ASP.NET Web Application that is borrowing code from a legacy web <em>site</em> project. I didn't "Add Existing" to any files, all files were "Add New" to prevent compatibility problems. Tried <a href="https://stackoverflow.com/questions/1316757/cant-access-control-id-in-code-behind">this</a>, didn't work.</p> <p>In the code-behind, every attempt to manipulate items declared in the aspx page results in an error like:</p> <blockquote> <p>'_Default' does not contain a definition for 'pnlInvalidCredentials'</p> </blockquote> <p>or</p> <blockquote> <p>The name 'txtUsername' does not exist in this context.</p> </blockquote>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USCommunity
    1. USkmarks2
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POCode-behind page cannot "see" any items/controls declared in the aspx page
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POCode-behind page cannot "see" any items/controls declared in the aspx page
      1. This table or related slice is empty.
      1. VTUpMod
    1. COdo you need an ending </div> tag by the way.. not that that will fix your problem but looking at being consistent can you paste in the header of the page as well I want to see what <%@ Page Language="C#" CodeFile=" " Inherits=" " %> looks like
      singulars
      1. POCode-behind page cannot "see" any items/controls declared in the aspx page
      1. USMethodMan
    2. COHey thanks. Yeah I removed code that wasn't necessary to the example, and accidentally took out the closing <div> with it.
      singulars
      1. POCode-behind page cannot "see" any items/controls declared in the aspx page
      1. USkmarks2
    3. COIs this a web site project or web app project?
      singulars
      1. POCode-behind page cannot "see" any items/controls declared in the aspx page
      1. USabatishchev
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload