I have 45 Columns and 30 rows in Data table. in First row second colum is item number(1 item number:)'1' is serial number and the values are continue from third row
(1 Item Number 1 5 6 8 9)upto 25 column. after the 25 th column another values are stored.like
(1 Itemnumber: 1 5 6 7 9 8 .......25 Description 36 96 96 96 58 87 98 .......)up to 45th column. now i want to check duplicate for item number.how to do it.