Hello @muhamed_fasil ,
Use the below LinQ expression :
(From R1 In TestDt.AsEnumerable
Select R = NewDt.Rows.Add(R1.ItemArray.Append(“Test”).ToArray)).CopyToDataTable()

Regards,
Rohith
Hello @muhamed_fasil ,
Use the below LinQ expression :
(From R1 In TestDt.AsEnumerable
Select R = NewDt.Rows.Add(R1.ItemArray.Append(“Test”).ToArray)).CopyToDataTable()

Regards,
Rohith