Linq help

I'm trying to use this Linq which works well but fails if one of the tables is empty.  Any clues as to how to solve this ?

Dim tabs = dc.Mapping.GetTables().[Select](Function(o) New With { _
                           .TableName = o.TableName, .Type_ = o.RowType.Type, .IsEntity = o.RowType.IsEntity, _
                           .RowCount = dc.GetTable(o.RowType.Type).Cast(Of Object)().Count()}) _
                           .Where(Function(o) o.IsEntity).ToList()

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WatersideAsked:
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Éric MoreauSenior .Net ConsultantCommented:
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WatersideAuthor Commented:
I don't see a Join ? Has something been lost in conversion to VB.net ? Do I need to join the table to the rowtype ?
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Éric MoreauSenior .Net ConsultantCommented:
Something like in linq will do a "left join"
Dim result = From c In _customers
             From o In c.Orders
             Group Join p In _products 
                On o.IdProduct Equals p.IdProduct 
                Into ProductsByOrder = Group
             From po In ProductsByOrder.DefaultIfEmpty(
                New Product With {
                      .IdProduct = 0,
                      .Description = "Unknown Product",
                      .Price = 0
                     })
             Select c.Country, c.City, c.Name, o.IdProduct, o.Quantity,
                    po.Description, po.Price, Total = o.Quantity * po.Price

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Visual Basic.NET

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