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BOOK: Beginning ASP.NET 4 : in C# and VB
This is the forum to discuss the Wrox book Beginning ASP.NET 4: in C# and VB by Imar Spaanjaars; ISBN: 9780470502211
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Old September 2nd, 2011, 04:27 PM
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Default Chapter 8 p 284-287

Greetings, I'm getting an Compilation Error. I have a funny feeling its something completely common and easy to take care of. But I'm new to this environment.
Help would be greatly appreciated.

Compilation Error

Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS0433: The type 'Direction' exists in both 'c:\Windows\Microsoft.NET\Framework\v4.0.30319\Tem porary ASP.NET Files\root\05db32ea\8e995263\assembly\dl3\419447d6 \72ba2997_ad69cc01\Planet_Wrox.DLL' and 'c:\Windows\Microsoft.NET\Framework\v4.0.30319\Tem porary ASP.NET Files\root\05db32ea\8e995263\App_Code.pyttdrid.dll '

Source Error:

Line 42: <br />
Line 43: <br />
Line 44: <Wrox:Banner ID="Banner1" runat="server" DisplayDirection="Horizontal" />
Line 45: </div>
Line 46: <div id="Footer">Footer goes here</div>

Source File: c:\Users\bj\Documents\Visual Studio 2010\Projects\Planet_Wrox\Planet_Wrox\MasterPages\ Frontend.Master Line: 44

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

namespace Planet_Wrox.Controls
    public partial class Banner : System.Web.UI.UserControl
        public Direction DisplayDirection { get; set; }
        protected void Page_Load(object sender, EventArgs e)
            HorizontalPanel.Visible = false;
            VerticalPanel.Visible = false;

            switch (DisplayDirection)
                case Direction.Horizontal:
                    HorizontalPanel.Visible = true;
                case Direction.Vertical:
                    VerticalPanel.Visible = true;

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="Banner.ascx.cs" Inherits="Planet_Wrox.Controls.Banner" %>
<asp:Panel ID="VerticalPanel" runat="server">
    <a href="http://p2p.wrox.com" target="_blank">
    <asp:Image ID="Image1" runat="server" AlternateText="This is a sample banner" 
        ImageUrl="~/Images/Banner120x240.gif" /></a>
<asp:Panel ID="HorizontalPanel" runat="server">
<a href="http://p2p.wrox.com" target="_blank">
<asp:Image ID="Image2" runat="server" AlternateText="This is a sample banner" ImageUrl="~/Images/Banner468x60.gif" />
public enum Direction
HTML Code:
<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="Frontend.master.cs" Inherits="Planet_Wrox.MasterPages.Frontend" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <asp:ContentPlaceHolder ID="head" runat="server">
    <form id="form1" runat="server">
    <div id="PageWrapper">
        <div id="Header"><a href="~/" runat="server"></a></div>
        <div id="MenuWrapper">
            <asp:Menu ID="Menu1" runat="server" CssClass="MainMenu" 
                DataSourceID="SiteMapDataSource1" Orientation="Horizontal" 
            <asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" 
                ShowStartingNode="False" />
            <asp:TreeView ID="TreeView1" runat="server" DataSourceID="SiteMapDataSource1" 
            <asp:TreeNodeStyle CssClass="FirstLeveMenuItems" />
        <div id="MainContent">
            <asp:SiteMapPath ID="SiteMapPath1" runat="server">
            </asp:SiteMapPath><br /><br />
        <asp:ContentPlaceHolder ID="cpMainContent" runat="server">
        <div id="Sidebar">
        Select a theme:<br />
            <asp:DropDownList ID="ThemeList" runat="server" AutoPostBack="True" 
                <asp:ListItem Value="DarkGrey">DarkGrey</asp:ListItem>
            <br />
            <br />
            <br />
            <Wrox:Banner ID="Banner1" runat="server" DisplayDirection="Horizontal" />
        <div id="Footer">Footer goes here</div>
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Old September 3rd, 2011, 08:30 AM
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Hi there,

Sounds like you created a Web Application Project rather than a Web Site Project. WAPs don't support the App_Colder (but they allow you to place code files anywhere else).

Take a look at chapter 2, page 37 for instructions on creating the proper project type for this book. Refer to page 34 for an explanation of the differences.

If you want to continue with the book without recreating the site, you can use the site from Chapter 7 (from the code download that comes with this book) as your starting point for this chapter.

Hope this helps,

Imar Spaanjaars
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Author of Beginning ASP.NET 4.5 : in C# and VB, Beginning ASP.NET Web Pages with WebMatrix
and Beginning ASP.NET 4 : in C# and VB.
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