Multi-selection on form grid handling: MultiSelectionHelper

In Dynamics AX 2012, a new class "MultiSelectionHelper" will handle those heavy lifting task for you as the following.

    Common common;
    MultiSelectionHelper helper = MultiSelectionHelper::construct();
    
    helper.parmDatasource(formDataSource);

    common = helper.getFirst();
    while (common.RecId != 0)
    {
        ...

        common = helper.getNext();
    }