Get multiple selected rows using D365 X++

 

First You need to insure that Multi Select for Button is True 

Create your extension class and add follow code below 

  [FormControlEventHandler(formControlStr(CustFreeInvoice, MultipleSelect), FormControlEventType::Clicked)]

    public static void  MultipleSelect_OnClicked(FormControl sender, FormControlEventArgs e)

    {

        MultiSelectionHelper          selectionHelper = MultiSelectionHelper::construct();

        Set                           selectedRecords = new Set(Types::Record);

        FormRun formrun                         = sender.formRun();

        CustInvoiceTable _CustInvoiceTable   = formrun.dataSource().cursor();

        CustInvoiceTable                       myTable;

     //   super();

    

        FormDataSource     _CustInvoiceTable_ds = sender.formRun().dataSource(formDataSourceStr(CustFreeInvoice,CustInvoiceTable)) as FormDataSource;

      

        selectionHelper.parmDataSource(_CustInvoiceTable_ds);

        myTable  = selectionHelper.getFirst();

 

        if (myTable.RecId)

        {

            while (myTable)

            {

                selectedRecords.add(myTable);

                info(strFmt("Selected record is %1",myTable.RecId));//Display selected record

                myTable = selectionHelper.getNext();

            }

        }

    }