Question

There is the linq statement I am using

            var renewalQuery = from r in crnnsupContext.Renewals
                               from w in crnnsupContext.WorkPlaces
                               join p in crnnsupContext.ProvStates on p.ProvinceStateID equals r.EmployerProvState
                               where  r.RegNumber == _username && r.PlaceOfWork == w.WorkID
                               select r;

There is a r.RenewalYear which I want to get the latest year, so I tried something like

                var renewalQuery = from r in crnnsupContext.Renewals
                               group r by r.RenewalYear into g
                               from w in crnnsupContext.WorkPlaces
                               join p in crnnsupContext.ProvStates on p.ProvinceStateID equals r.EmployerProvState
                               where  r.RegNumber == _username && r.PlaceOfWork == w.WorkID
                               select g.max(r.RenewalYear);

obviously it doesn’t work, does anyone know the correct grammar for this? thanks very much

Answer 1

Select your year and then use Max() on that:

var renewalQuery = (from r in crnnsupContext.Renewals
                               group r by r.RenewalYear into g
                               from w in crnnsupContext.WorkPlaces
                               join p in crnnsupContext.ProvStates on p.ProvinceStateID equals r.EmployerProvState
                               where  r.RegNumber == _username && r.PlaceOfWork == w.WorkID
                               select r.RenewalYear).Max();