Between Frontend.master & master.cs

damoncombs · September 4th, 2014, 11:06 AM

Hi,

Great book and I'm sure this is an error on my behalf, but it's driving me crazy trying to figure out what's going on. When I build the web site, I keep getting three errors stating that the 'ThemeList', 'Menu1' & 'TreeView1' do not exist in the current context....

Those controls are clearly defined in Frontend.master and the errors are showing up in the Frontend.master.cs file. I will attach code of both below.

Thanks in advance for your help!
Damon

Here is the code for Frontend.master:

Code:

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Frontend.master.cs" Inherits="MasterPages_Frontend" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title></title>
  <asp:ContentPlaceHolder ID="head" runat="server">
  </asp:ContentPlaceHolder>
  <script src="/Scripts/modernizr-2.6.2.js"></script>
</head>
<body>
  <form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true"></asp:ScriptManager>
    <div id="PageWrapper">
      <header><a href="/"></a></header>
      <nav>
        <asp:Menu ID="Menu1" runat="server" CssClass="MainMenu" DataSourceID="SiteMapDataSource1" Orientation="Horizontal" StaticEnableDefaultPopOutImage="False"></asp:Menu>
        <asp:TreeView ID="TreeView1" runat="server" DataSourceID="SiteMapDataSource1" ShowExpandCollapse="False">
          <LevelStyles>
            <asp:TreeNodeStyle CssClass="FirstLevelMenuItems" />
          </LevelStyles>
        </asp:TreeView>
        <asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" ShowStartingNode="False" />
      </nav>
      <section id="MainContent">
        <asp:SiteMapPath ID="SiteMapPath1" runat="server"></asp:SiteMapPath>
        <br />
        <br />
        <asp:ContentPlaceHolder ID="cpMainContent" runat="server">
        </asp:ContentPlaceHolder>
      </section>
      <aside id="Sidebar">
        Select a theme<br />
        <asp:DropDownList ID="ThemeList" runat="server" AutoPostBack="True" OnSelectedIndexChanged="ThemeList_SelectedIndexChanged">
          <asp:ListItem>Monochrome</asp:ListItem>
          <asp:ListItem>DarkGrey</asp:ListItem>
        </asp:DropDownList>
        <br />
        <br />
        <Wrox:Banner ID="Banner1" runat="server" DisplayDirection="Vertical" />
        <br />
      </aside>
      <footer>Footer Goes Here</footer>
    </div>
  </form>
</body>
</html>

This is the code for Frontend.master.cs:

Code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class MasterPages_Frontend : System.Web.UI.MasterPage
{
  protected void Page_Load(object sender, EventArgs e)
  {
    if (!Page.IsPostBack)
    {
      string selectedTheme = Page.Theme;
      HttpCookie preferredTheme = Request.Cookies.Get("PreferredTheme");
      if (preferredTheme != null)
      {
        selectedTheme = preferredTheme.Value;
      }
      if (!string.IsNullOrEmpty(selectedTheme))
      {
        ListItem item = ThemeList.Items.FindByValue(selectedTheme);
        if (item != null)
        {
          item.Selected = true;
        }
      }
    }
    switch (Page.Theme.ToLower())
    {
      case "darkgrey":
        Menu1.Visible = false;
        TreeView1.Visible = true;
        break;
      default:
        Menu1.Visible = true;
        TreeView1.Visible = false;
        break;
    }
  }

  protected void ThemeList_SelectedIndexChanged(object sender, EventArgs e)
  {
    HttpCookie preferredTheme = new HttpCookie("PreferredTheme");
    preferredTheme.Expires = DateTime.Now.AddMonths(3);
    preferredTheme.Value = ThemeList.SelectedValue;
    Response.Cookies.Add(preferredTheme);
    Response.Redirect(Request.Url.ToString());
  }
}

Here are the error messages from VS:

Code:

Error	1	The name 'ThemeList' does not exist in the current context	T:\Damon\Wrox\BegASPNET\Site\App_Code\Frontend.master.cs	22	25	Site
Error	2	The name 'Menu1' does not exist in the current context	T:\Damon\Wrox\BegASPNET\Site\App_Code\Frontend.master.cs	32	9	Site
Error	3	The name 'TreeView1' does not exist in the current context	T:\Damon\Wrox\BegASPNET\Site\App_Code\Frontend.master.cs	33	9	Site
Error	4	The name 'Menu1' does not exist in the current context	T:\Damon\Wrox\BegASPNET\Site\App_Code\Frontend.master.cs	36	9	Site
Error	5	The name 'TreeView1' does not exist in the current context	T:\Damon\Wrox\BegASPNET\Site\App_Code\Frontend.master.cs	37	9	Site
Error	6	The name 'ThemeList' does not exist in the current context	T:\Damon\Wrox\BegASPNET\Site\App_Code\Frontend.master.cs	46	28	Site

Imar · September 4th, 2014, 05:58 PM

Hi there,

That's odd. Your code looks fine; I just copied and pasted it in my site and there are no errors.

Could there be another build error that prevents the site from compiling? When you look at the site in File Explorer in Windows, do you see any files that shouldn't be there (such as a copy of the master)?

If you can't solve it, send me a zipped version of the site and I'll take a look. You find my e-mail address in the introduction of the book.

Cheers,

Imar

Imar · September 4th, 2014, 06:00 PM

Oh, I just noticed this:

>> \Wrox\BegASPNET\Site\App_Code\Frontend.master.cs

Somehow your master page or code file ended up in App_Code. Both should be in the MasterPages folder.

Imar

damoncombs · September 5th, 2014, 10:19 AM

That was it! Not sure how or why the .cs file ended up in there....

It's amazing how this site is so helpful and I don't think it would work as well as it does without your involvement, Imar. You, Sir, do a great service to everyone who participates here.

Thanks again for your time,
Damon

Imar · September 5th, 2014, 11:02 AM

Hi Damon,

You're very welcome. Glad to hear the problem is now fixed.

Imar