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BOOK: Professional ASP.NET 4 : in C# and VB
This is the forum to discuss the Wrox book Professional ASP.NET 4 in C# and VB by Bill Evjen, Scott Hanselman, Devin Rader; ISBN: 9780470502204
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Old September 13th, 2013, 07:46 PM
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Default CH 30-15: Could not load type 'NorthwindDataContext'.

Ch30-15 Listing: Dynamic Data Manager example
(Built on top of 30-8)

Error Message: Could not load type 'NorthwindDataContext'.

It Builds successfully/ No errors; 30-8,..12,13,14 work fine using the same Northwind.dbml file.

The Northwind.dbml properties show name= "NorthwindDataContext" ; but Content & entity namespace Are blank.
Properties header = NorthwindDataContext DataContext

The global.aspx file use "NorthwindDataContext" as in 30-9 listing.

Northwind.dbml file IS not in an App_Code folder, just in root...

Anybody got any Ideas ?

Thanks, Edgy

    <form id="form1" runat="server">
        <asp:GridView ID="GridView1" runat="server" AllowPaging= "True" 
         AutoGenerateColumns = "True" DataKeyNames="CustomerID" DataSourceID="LinqDataSource1" >

        <asp:LinqDataSource ID="LinqDataSource1" runat="server" ContextTypeName="NorthwindDataContext"
        EntityTypeName= "" OrderBy="CompanyName" TableName="Customers" >

        <asp:DynamicDataManager ID="DynamicDataManager1" runat="server">
            <asp:DataControlReference ControlID="GridView1" />
Old September 14th, 2013, 06:50 AM
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Is this a web site project and not an web application project? If so, the dbml file must be in App_Code.


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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