Those values will be highlighted after comparison between 2 attached excel sheets as follows :Check in 1st DataTable" DaysList" if the values are exists in 2nd DataTable"ThisMonthsDays", If So it will highlight them in Yellow or Print them in 3rd DataBase.
I fixed the issue by using :
1- Read both Database : DT1 & DT2
2- Output the result to DT3
3-“Join Data Tables” with “Inner” type
4- Save the result to excel using : Write Range
Thx