The repeating grid and the modal popup render in the non-template mode. Multi-select list control only supports the template mode.
As a work around you can perform the following local-change:
In the General tab of the table Layout Properties, enable the 'Optimize for mobile' checkbox. This modifies the grid to template mode; however, it accepts Data Page only as the Source.
Hope it helps!
Posted: 3 years ago
Posted: 26 Nov 2019 6:27 EST
Geeda Ilango (GeedA)
Technical Solutions Engineer
As mentioned, The multi-select control works only with the template UI. A table with the 'Optimize Code' option unchecked, renders in the non-template mode. However, when the 'Optimize Code' option is enabled, the table changes to the 'Read Only' mode and allows the user to customize it. However, it does not provide the option to Add or Delete item. Hence, the multi-select control is not supported or does not work with the non-template table. This is the product limitation.
The feasible solution is to use the Repeating Dynamic Layout (RDL) instead of a table. Customize the RDL as per the requirement.