The table-related events get triggered only based on the actions performed in the respective tables. Hooking the Table.SelectedRecordsChanged event affects the parent table alone, by default. So, selecting any record in the child table does not trigger this event, but the Table.SelectedRecordsChanged event of the respective child table has to be hooked to achieve the same.
The following code example is used to get a selected record value from a child table in the GridGroupingControl.
Figure 1: Value from the selected record
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