Hi there @1vivek12.
You can do the following:
dtMyDataTable = dtMyDataTable.AsEnumerable.Where(Function (x) x.Item("ENODEB").ToString.Trim.ToLower.Equals(current_siteid.Trim.ToLower) = True).CopyToDataTable
This will return a DataTable where all rows meet your criteria (‘ENODEB’ column = current_siteid).
Thanks,
Josh