Looping selected records in the form in D365FO and X++ code to loop form selected records.

When the class main method initiated there can pass the args.record to below method and can loop records.

Reference: Class: PurchReqCancel

private void runLoopCancelWin(Common _common)

    {

        FormDataSource fds            = FormDataUtil::getFormDataSource(_common);

        Common         common;

        for (common = fds.getFirst(1) ? fds.getFirst(1) : fds.cursor(); common; common = fds.getNext())

        {

            this.doCancel(common);

        }

    }