[Solved] Group by a nested list of object based on date [closed]

by 


var temp
        = dbconnect.tblAnswerLists
                   .Where(i => i.StudentNum == studentNumber && i.username==objstu.Return_SupervisorUserName_By_StudentNumber(studentNumber))
                   .ToList() // <-- This will bring the data into memory.
                   .Select(i => new PresentClass.supervisorAnswerQuesttionPres
                       {
                           answerList = Return_Answer_List(studentNumber,i.dateOfAnswer.Value.Date),
                           questionList = Return_Question_List(studentNumber, i.dateOfAnswer.Value.Date),
                           date = ConvertToPersianToShow(i.dateOfAnswer.Value.Date)
                       })
                   .GroupBy(i => i.date)
                   .OrderByDescending(i => i.Key)
                   .ToList();

temp will actually be of type List<IGrouping<string, PresentClass.supervisorAnswerQuesttionPres>>.

2

solved Group by a nested list of object based on date [closed]