Question

I am working with the following block of code …

List<ThemeObject> themeList = (from theme in database.Themes
                            join image in database.DBImages on theme.imageID equals image.imageID
                            into resultSet
                            from item in resultSet
                            select new ThemeObject { Name = theme.Name, ImageID = item.imageID}).ToList();
dgvGridView.DataSource = themeList;
dgvGridView.DataBind();

The list object populates fine. The datagrid is setup with 2 columns.

• A textbox column for the “Name” which is bound to “Name”
• An image column which is bound to the “ImageID” field

When I execute the code I receive the following error on the DataBind()

Could not determine a MetaTable. A
MetaTable could not be determined for
the data source ” and one could not
be inferred from the request URL. Make
sure that the table is mapped to the
dats source, or that the data source
is configured with a valid context
type and table name, or that the
request is part of a registered
DynamicDataRoute.

I’m not using any dynamicdataroutes as far as I can tell. Has anyone experienced this error before?

Answer 1

Assuming you are developing a Dynamic Data Entities web application (that’s what the error you provided hints about), try this in your Page_Init:

dgvGridView.EnableDynamicData(typeof(ThemeObject));