Convert SQL into Linq query

Question

I\'m quite new at Linq queries, I just want to convert my DB query into Linq.

Here is my simple SQL query:

var query = \"SELECT EnrollmentDate, COUNT(*)          


        

Answer 1

var result = db.Person
               .Where(r=> r.EnrollmentDate != null)
               .GroupBy(r=> r.EnrollmentDate)
               .Select( group=> new 
                              {
                                 EnrollmentDate = group.Key, 
                                 Count = group.Count()
                               });

Answer 2

var query = from row in db.Person
            where row.EnrollmentDate != null
            group row by row.EnrollmentDate into grp
            select new {
                EnrollmentDate = grp.Key,
                Count = grp.Count()
            };