Linq - highest occurring value

My requirement is to fetch data using Linq, based on highest occurring value.

       var Output = (from s in  dt2.AsEnumerable()
                    from c in  dt1.AsEnumerable()
                    where Regex.IsMatch(s.Field<string>("CODE1"), c.Field<string>("CODE1")) &&
                          Regex.IsMatch(s.Field<string>("SAMPLE"), c.Field<string>("CODE2"))                                                           
                      select new
                     {
                         OCCURANCE = c.Field<int>("OCCURANCE"),
                         CODE1 = s.Field<string>("CODE1"),
                         SAMPLE = s.Field<string>("SAMPLE"),
                     });

Receiving output as bellow -

From the above result set, 3rd and 4th row contains same data in CODE1 and SAMPLE column. But i need to fetch the record which has highest OCCURANCE value, hence I need to fetch row no 3 instead and exclude row no 4.

My required output is as given bellow -