Hi Harry,
Extremely sorry for the long delay in getting back to you.
With the nested tables, you need to get the child table you want, for getting the selected rows. Here is a code snippet:
Dim table As Syncfusion.Windows.Forms.Grid.Grouping.GridTable = Me.GridGroupingControl1.Table
Console.WriteLine("The " & table.TableDescriptor.Name & " selected records")
printSelectedRecords(table)
For Each rt As Syncfusion.Grouping.Table In table.RelatedTables
Console.WriteLine("The " & rt.TableDescriptor.Name & " selected records")
printSelectedRecords(TryCast(rt, Syncfusion.Windows.Forms.Grid.Grouping.GridTable))
Next rt
Kindly have a look into the sample available in the link below and please let me know if it helps:
http://websamples.syncfusion.com//samples/Grid.Windows/F72369/main.htmRegards,
Subhasheela R