Please help me to understand and extract

Hi @Venu_V

1.Is the input present in datatable?
2.Do you need to write output in 2 sheets like Potassium and Dubnium sheets?

If that is the case then try like below

potassiumDT = (From row In InputDT.AsEnumerable()
               Where row("ColumnName").ToString.Contains("PORD")
               Select row).CopyToDataTable()
dubniumDT = (From row In InputDT.AsEnumerable()
             Where row("ColumnName").ToString.Contains("DORD")
             Select row).CopyToDataTable()

Regards,