From Xojo Documentation

Property (As iOSTableDataSource )
aiOSTable.DataSource = newiOSTableDataSourceValue
iOSTableDataSourceValue = aiOSTable.DataSource

Supported on Mobile (iOS).

The data to display in the table.


For data sets that are large, a data source allows you to efficiently provide rows without the memory cost of having an iOSTableCell in memory at all times for every single one of them.

DataSource is a weak reference so you need to make sure your data source instance does not go out of scope. The easiest way to ensure this is to make it a property of your iOSView.