Hi,
Alright.
If your datatable has just one column, the following will work
dt = dt.AsEnumerable.Select(Function(r) dt.Clone.LoadDataRow({Double.Parse(r(0).ToString)},False)).CopyToDataTable
If there are 2 or more columns, try Invoke Code activity with the following code.
dt = dt.AsEnumerable.Select(Function(r)
r(0) = Double.Parse(r(0).ToString)
Return r
End Function).CopyToDataTable
Regards,