Frage zu LINQ to DataTable

Dim txtBasis = From tbl In myPBtbl
                           Join dbKdInfos In myPBConv_KdDaten On tbl(4) Equals dbKdInfos(0) And tbl(1) Equals dbKdInfos(1)
                           Join dbPrInfos In myPBConv_Produkte On dbKdInfos(2) Equals dbPrInfos(0) And tbl(10) Equals dbPrInfos(1)
                           Select New With {.quelle = tbl(0), .jahr = Strings.Right(tbl(8), 4), .debitor = tbl(1), .frankierlizenz = tbl(4),
                                         .produkt = tbl(10), .Anzahl = 1, .barcode = tbl(9), .Dispatch = Strings.Right(tbl(8), 10),
                                         .GlobeId = dbKdInfos(2), .EndKunde = dbKdInfos(3), .zusatzl = tbl(16), .gewichtsrange = tbl(12),
                                         .GlobeProdukt = dbPrInfos(2), .OfferID = dbPrInfos(4), .OfferPos = dbPrInfos(5), .produktpreis = dbPrInfos(6), .gewicht = tbl(20),
                                         .charge = dbPrInfos(7), .chargedescript = dbPrInfos(8) }

     Dim _tbl As DataTable = txtBasis.CopyToDataTable()
     Dim _vw As Dataview = txtBasis.AsDataView()