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BOOK: Beginning ASP.NET 4 : in C# and VB
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Old July 2nd, 2010, 10:46 PM
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Default Chapter 15 Try Out Applying Styes Pg 533

At Step 7 the build fails with error Error 1 Could not load type 'System.Data.Entity.Design.AspNet.EntityDesignerBu ildProvider'. C:\BegASPNET\Source\Chapter 15\web.config 22
Even your own source code fails.

Please advise.



<%@ Page Title="Planet Wrox - Management - Genres" Language="VB" MasterPageFile="~/MasterPages/Management.master" AutoEventWireup="false" CodeFile="Genres.aspx.vb" Inherits="Management_Genres" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
<asp:Content ID="Content2" ContentPlaceHolderID="cpMainContent" runat="Server">
<asp:Label ID="ErrorMessage" runat="server" CssClass="ErrorMessage" EnableViewState="False"></asp:Label>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" DataKeyNames="Id" DataSourceID="SqlDataSource1" EmptyDataText="There are no data records to display." CellPadding="4" ForeColor="#333333" GridLines="None">
<AlternatingRowStyle BackColor="White" />
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True"
ShowSelectButton="True" />
<asp:TemplateField ShowHeader="False">
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="True" CommandName="Update" Text="Update"></asp:LinkButton>
&nbsp;<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" CommandName="Cancel" Text="Cancel"></asp:LinkButton>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Edit" Text="Edit"></asp:LinkButton>
&nbsp;<asp:LinkButton ID="DeleteLink" runat="server" CausesValidation="False" CommandName="Delete" Text="Delete"></asp:LinkButton>
<ItemStyle Width="100px" />
<asp:BoundField ItemStyle-Width="200px" DataField="Name" HeaderText="Name" SortExpression="Name">
<ItemStyle Width="200px"></ItemStyle>
<asp:BoundField DataField="SortOrder" HeaderText="SortOrder" SortExpression="SortOrder" />
<EditRowStyle BackColor="#2461BF" />
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#EFF3FB" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#F5F7FB" />
<SortedAscendingHeaderStyle BackColor="#6D95E1" />
<SortedDescendingCellStyle BackColor="#E9EBEF" />
<SortedDescendingHeaderStyle BackColor="#4870BE" />
<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" DataKeyNames="Id" DataSourceID="SqlDataSource1" DefaultMode="Insert" Height="50px" Width="125px">
<asp:BoundField DataField="Id" HeaderText="Id" InsertVisible="False" ReadOnly="True" SortExpression="Id" />
<asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
<asp:BoundField DataField="SortOrder" HeaderText="SortOrder" SortExpression="SortOrder" />
<asp:CommandField ShowInsertButton="True" />
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:PlanetWroxConnectionString1 %>" DeleteCommand="DELETE FROM [Genre] WHERE [Id] = @Id" InsertCommand="INSERT INTO [Genre] ([Name], [SortOrder]) VALUES (@Name, @SortOrder)" ProviderName="<%$ ConnectionStrings:PlanetWroxConnectionString1.Prov iderName %>" SelectCommand="SELECT Genre.Id, Genre.Name, Genre.SortOrder, COUNT(Review.Id) AS NumberOfReviews FROM Genre LEFT OUTER JOIN Review ON Genre.Id = Review.GenreId GROUP BY Genre.Id, Genre.Name, Genre.SortOrder" UpdateCommand="UPDATE [Genre] SET [Name] = @Name, [SortOrder] = @SortOrder WHERE [Id] = @Id">
<asp:Parameter Name="Id" Type="Int32" />
<asp:Parameter Name="Name" Type="String" />
<asp:Parameter Name="SortOrder" Type="Int32" />
<asp:Parameter Name="Name" Type="String" />
<asp:Parameter Name="SortOrder" Type="Int32" />
<asp:Parameter Name="Id" Type="Int32" />
<script type="text/javascript">
$(function ()
$('.GridView tr:odd:not(.GridViewPagerStyle)').addClass('GridVi ewAlternatingRowStyle');

Old July 3rd, 2010, 08:35 AM
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Hi there,

When did you download the source? A few days ago, a new version was uploaded that should fix the problem with the downloadable code.

How did you create this web site and the model? The problem is that some setting are missing from web.config; however they should have been added by Visual Web Developer when you added the ADO.NOT model.

Which exact version of Visual Studio are you using? The RTM version? (Check Help | About for details.)

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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