A Great Buried Sample in Dynamic Data Preview 4 – Dynamic Data Futures

I just thought I’d mention this find ad David Ebbo mentioned overriding MetaTable to get at the table.GetScaffoldColumns() method, and then I found the Dynamic Data Futures sample inside of Preview 4 (which had a billing of being the Futures sample updated to work with Preview 4) and in side the it I found the CustomMetaClasses folder:

Figure 1 – The CustomMetaClasses folder

This of course give you the sample you need to do this your self my plan is to use this sample to make a MetaTable Class that I can pass in a Lambda function to do all my column generation without ever having to add IAutoFieldGenerator to the page (which in .Net 4.0 will not work on the Details, Edit and Insert pages as they are to be based on FormView to accomodate EntityTemplates).

public class Global : System.Web.HttpApplication
{
    private static MetaModel s_defaultModel = new CustomMetaModel();
    public static MetaModel DefaultModel
    {
        get
        {
            return s_defaultModel;
        }
    }

    public static void RegisterRoutes(RouteCollection routes)
    {
        DefaultModel.RegisterContext(typeof(NorthwindDataContext), new ContextConfiguration()
        {
            ScaffoldAllTables = true,
            MetadataProviderFactory = (type => new InMemoryMetadataTypeDescriptionProvider(type,
                new AssociatedMetadataTypeTypeDescriptionProvider(type)))
        });

Listing 1 – Adding a DefaultModel based on CustomMetaModel from the CustomMetaClasses folder

Listing 1 shows the addition of the CustomMetaModel to the Global.asax allowing you to override the Meta Classes in one place this is cool.

Thanks again ASP.Net Team