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Troubleshooting Question

How to avoid return duplicate data in list in  c# mvc

Last Modified: 2020-09-28
I have a list of dates and need to avoid duplicate date
how I return a list of dates without duplicated in razor view

I try use
 var month = DateTime.Now.Month;

            var alldates = db.CheckIn_Out.Where(m => m.CheckDate.Value.Month == month).Select(m => m.CheckDate.Value.Day).Distinct().ToList();
            var model = from p in db.CheckIn_Out
                        where p.CheckDate.Value.Month == month
                        group p by p.Emp_Name into k
                        select new CheckClass
                            Emp_Name = k.Key,
                            CheckDates = k.ToList(),
                            countDay = alldates.Distinct().ToList()

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