See https://community.mendix.com/link/questions/118309:
Clicking Generate->Select page gets you a popup page with a list of selectable objects. This list is currently a Datagrid-widget. Is it possible to replace this with a DataGrid2-widget?
Problem I run into is that there seems no way to make an object get selected upon (double-)clicking it.
Would be nice if DataGrid2 would be the standard widget (or at least usable) on a selectpage instead of the first version of Datagrid.
Like Attar correctly says: it will not open or select a object upon double click