Please help in Left Join Linq

var query = (from attendace in ListAttendace_Details
                       join makeup in  ListMakeup
                       on attendace.Attendace_ID equals makeup.Attendace_ID
                       into yG
                       from y1 in yG.DefaultIfEmpty()

                       select new { Makup=y1.Attendace_ID==null?0:1,attendace.Status, attendace.ISAttend, attendace.Attendace_ID }).ToList();