Wrox Programmer Forums
Go Back   Wrox Programmer Forums > ASP.NET and ASP > ASP.NET 4 > BOOK: Beginning ASP.NET 4 : in C# and VB
|
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
Welcome to the p2p.wrox.com Forums.

You are currently viewing the BOOK: Beginning ASP.NET 4 : in C# and VB section of the Wrox Programmer to Programmer discussions. This is a community of software programmers and website developers including Wrox book authors and readers. New member registration was closed in 2019. New posts were shut off and the site was archived into this static format as of October 1, 2020. If you require technical support for a Wrox book please contact http://hub.wiley.com
 
Old March 25th, 2013, 12:05 PM
Registered User
 
Join Date: Mar 2013
Posts: 3
Thanks: 1
Thanked 0 Times in 0 Posts
Default Try-it-out on p.284. Refuses to recognize DisplayDirection

Hello
I'm working on the Try-it-out on p.284 ("Creating Smarter User Controls").
I followed the directions to the letter, and VWD refuses to recognize DisplayDirection on Banner.ascx.cs The error keeps popping up saying "A switch expression or case label must be a bool, char, string, integral, enum, or corresponding nullable type". I really a appreciate your help

First, my Direction class:
Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

/// <summary>
/// Summary description for Direction
/// </summary>
public class Direction
{
public enum Direction
{
Horizontal,
Vertical

}


}



Second, here is my code-behind for my Banner control:
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 Controls_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;
break;
case Direction.Vertical:
VerticalPanel.Visible = true;
break;
}

}

}
Next, the markup for the banner control:
Code:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="Banner.ascx.cs" Inherits="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>

<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" />
</a>
</asp:Panel>


And this is the master page's code:

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Frontend.master.cs" Inherits="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">
<title></title>
<asp:ContentPlaceHolder id="head" runat="server">
</asp:ContentPlaceHolder>

</head>
<body>
<form id="form1" runat="server">
<div id="PageWrapper">
<div id="Header"><a href="~/" runat="server">Header Goes Here</a></div>
</div>
<div id="MenuWrapper">
<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" />
</div>
<div id="MainContent">
<asp:SiteMapPath ID="SiteMapPath1" runat="server">
</asp:SiteMapPath> <br /><br/>
<asp:ContentPlaceHolder ID="cpMainContent" runat="server">
</asp:ContentPlaceHolder>
</div>
<div id="Sidebar">
Select Theme<br />
<asp:DropDownList ID="ThemeList" runat="server" AutoPostBack="True"
Height="16px" Width="140px">
<asp:ListItem>Monochrome</asp:ListItem>
<asp:ListItem>DarkGrey</asp:ListItem>
</asp:DropDownList>

<br />
<br />
<Wrox:Banner ID="Banner1" runat="server" />
<br />
<br />
<br />
<br />

</div>
<div id="Footer">Footer Goes Here</div>

</form>
</body>
</html>
 
Old March 25th, 2013, 04:50 PM
Authorized User
 
Join Date: Jun 2012
Posts: 12
Thanks: 1
Thanked 0 Times in 0 Posts
Default

Hi Danay!

I'm having the exact same problem with the exact same exercise (lol). I don't know when Imar will be back. He's been gone for like a week now. Are you doing yours in C#, like me? I'm gonna try the VB version and see what happens. Sorry I couldn't be of any help.

GreenhornPup
 
Old March 26th, 2013, 11:44 AM
Imar's Avatar
Wrox Author
 
Join Date: Jun 2003
Posts: 17,089
Thanks: 80
Thanked 1,576 Times in 1,552 Posts
Default

Hi there,

Take a look at this:

Code:
public class Direction
{
    public enum Direction
    { 
        Horizontal,
        Vertical
    
    }
   
  
}
You have nested the enum inside a class, which is not the correct way to do it. Remove the wrapping class and I think it should work:

Code:
public enum Direction
    { 
           Horizontal,
           Vertical
    }
Hope this helps,

Imar
__________________
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Follow me on Twitter

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.
Did this post help you? Click the button below this post to show your appreciation!
The Following User Says Thank You to Imar For This Useful Post:
danay2013 (March 28th, 2013)
 
Old March 28th, 2013, 10:13 AM
Registered User
 
Join Date: Mar 2013
Posts: 3
Thanks: 1
Thanked 0 Times in 0 Posts
Default thanks

Thanks Imar your answer fix the problem, that are the commun mistakes of the beginners
 
Old March 28th, 2013, 10:14 AM
Registered User
 
Join Date: Mar 2013
Posts: 3
Thanks: 1
Thanked 0 Times in 0 Posts
Default

Take a look to Imar's answer ....





Similar Threads
Thread Thread Starter Forum Replies Last Post
Try-it-out on p. 284 - DisplayDirection not recognized GreenhornPup BOOK: Beginning ASP.NET 4 : in C# and VB 4 March 26th, 2013 01:11 PM
Errata Lesson 23 pg.284 RMADANAT BOOK: Stephens' C# Programming with Visual Studio 2010 24-Hour Trainer 1 February 2nd, 2012 03:16 PM
Chapter 8 p 284-287 wrighwj BOOK: Beginning ASP.NET 4 : in C# and VB 1 September 3rd, 2011 08:30 AM
DisplayDirection not liked member4953 BOOK: Beginning ASP.NET 3.5 : in C# and VB BOOK ISBN: 978-0-470-18759-3 10 April 1st, 2009 03:16 AM
refuses to centre a graphic cat CSS Cascading Style Sheets 5 November 6th, 2004 10:54 AM





Powered by vBulletin®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright (c) 2020 John Wiley & Sons, Inc.