Hey @fairymemay
Kindly check this now please…
It was due to a bracket mismatch.
OutputDT.AsEnumerable.Where(Function(x) _
TypeVoucher.Contains(x("Premium").ToString) AndAlso
x("Type Special").ToString.Equals("Yes") OrElse
(x("Premium").ToString.Equals("เงินคืนเข้าบัญชีเงินฝาก SCB") Or x("Premium").ToString.Equals("เงินคืนเข้าบัตรเครดิต SCB")) AndAlso
x("Type Special").ToString.Equals("Yes") AndAlso String.IsNullOrWhiteSpace(x("Account No").ToString)).ToArray
Thanks
#nK