chapter 8 (User Control) some problem

SHOOGN · June 29th, 2015, 05:57 AM

In page 290 Try it out (Implementing the NavigateUrl Property) step number 6
When I type the

Code:

 HorizontalLink.HRef = NavigateUrl

and

Code:

VerticalLink.HRef = NavigateUrl

in code behind in control/banner.ascx.vb
directly there is blue underline in HorizontalLink and VerticalLink
In correction options (this two attribute in not declared)

SHOOGN · June 29th, 2015, 06:34 AM

One mistake and all things now is bad
the reason is Banner ...and I deleted the page and I will read this chapter for second time (hmmmm) very sad
I want to continuous even arrive to database chapter and with this type I think is very difficult

Imar · July 1st, 2015, 08:20 AM

You don't *have* to delete the file and start over; you can also compare your code with mine that comes with the book. Issues like this are often caused by simple typos or other errors.

Cheers,

Imar

SHOOGN · July 5th, 2015, 03:36 AM

the same things now it happen again
when I add the :
runat="server" id="horizontallink" to the image herf in banner control file, the two image disappear from design view

Imar · July 7th, 2015, 10:42 AM

Can you post the code for control and the page that uses it? (Markup and Code Behind please).

Imar

SHOOGN · July 8th, 2015, 05:30 AM

Ok ....Hi Imar
this is banner's code (Markup) (the wrong happend when I add the Id for herf Image)

Code:

 <%@ Control Language="VB" AutoEventWireup="false" CodeFile="Banner.ascx.vb" Inherits="Controls_Banner" %>
<asp:Panel ID="VerticalPanel" runat="server">
    <a href="http://P2P.wrox.com"target="_blank " runat="server id="VertivalLink">
    <asp:Image ID="Image1" runat="server" ImageUrl="~/Images/Banner120x240.gif" 
    AlternateText="This is a sample banner" />
</a>
</asp:Panel>
<asp:Panel ID="HorizontalPanel" runat="server">
    <a href="http://P2P.wrox.com"target="_blank " runat="server" id="HorizontalLink>
    <asp:Image ID="Image2" runat="server" ImageUrl="~/Images/Banner468x60.gif" 
    AlternateText="This is a sample banner" />
</a>
</asp:Panel>

and this is code behind for user control (Banner)

Code:

Partial Class Controls_Banner
    Inherits System.Web.UI.UserControl
    Public Property DisplayDirection As Direction
    Public Property NavigateUrl() As String
        Get
            Dim _navigateUrl As Object = ViewState("NavigateUrl")
            If _navigateUrl IsNot Nothing Then
                Return CType(_navigateUrl, String)
            Else
                Return "http://p2p.wrox.com"  ' Return a default value
            End If
        End Get
        Set(ByVal Value As String)
            ViewState("NavigateUrl") = Value
        End Set
    End Property
    Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
        Horizontalpanel.Visible = False
        VerticalPanel.Visible = False

        Select Case DisplayDirection
            Case Direction.horizontal
                HorizontalPanel.Visible = True
                HorizontalLink.HRef = NavigateUrl

            Case Direction.vertical
                VerticalPanel.Visible = True
                VerticalLink.HRef = NavigateUrl
        End Select
    End Sub
End Class

this is code behind for Aboutus.aspx page I want add banner to it

Code:

Partial Class About_AboutUs
    Inherits BasePage

    Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
        If Not Page.IsPostBack Then
            Banner2.DisplayDirection = Direction.vertical
            Banner2.NavigateUrl = "http://imar.spaanjaars.com"
        End If
    End Sub
End Class

And the markup view for same page

Code:

<%@ Page Title="About Us" Language="VB" MasterPageFile="~/MasterPages/Frontend.master" AutoEventWireup="false" CodeFile="AboutUs.aspx.vb" Inherits="About_AboutUs" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cpMainContent" Runat="Server">
    <asp:Button ID="Button1" runat="server" Text="Button" />      
    <wrox:Banner ID="Banner2" runat="server" DisplayDirection="horizontal" />
</asp:Content>

Imar · July 8th, 2015, 07:52 AM

I can see a couple things wrong in your code:

Quote:

Note that there is no space between the " and target. There's also an extra space after _blank. You're then missing another quote after server and finally, you have VertivalLink instead of VerticalLink.

Try this instead:

<a href="http://P2P.wrox.com" target="_blank" runat="server" id="VerticalLink">

You'll need to apply similar fixes to the horizontal link which is also missing a closing " character at the end.

Cheers,

Imar

SHOOGN · July 12th, 2015, 04:22 AM

Thanks a lot
Now it's working the wrong there is no space between quote and target and some typo
thanks Imar
from now I will not remove any page