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WPF DataGrid does not show new row on empty linq query

Posted By:      Posted Date: September 18, 2010    Points: 0   Category :WPF
I'm using Linq to Entities and bind a linq query to the WPF 4 DataGrid datacontext.  The linq query look something like this:                  var query = from s in this.db.Customers                         orderby s.Name                         select s;             private ContextEntities db = new ContextEntities();             private BindingListCollectionView View;             this.View = ((BindingListCollectionView)CollectionViewSource.GetDefaultView(query));             this.DataContext = this.View; If my Customers table does not have any record, the DataGrid does not show any row for user to add.  I have CanUserAddRows set to true.  I found another post that address this issue but it say to create a new entity type.  http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/cdc0fb6f-2335-42e2-98d7-4bd73ffffc8c My project

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I have exactly the same issue present on the post: http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/cdc0fb6f-2335-42e2-98d7-4bd73ffffc8c

However, the answer is still unclear to me, confusing. So I would like to clarify what do I have to get the new blank row on the datagrid.

My custom collection is called PieceUIObjects (derived from ObservableCollection) containing PieceUIObject objects.

What do I have to change in my collection in order to properly "inform" the datagrid how my object is so that the new row is added on it when the collection is initialized with no elements?

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