Input string was not in a correct format. Expected type is Decimal : I am not inserting any value in `VOUCHER_NO` column and updating it.

But it is giving me error as

>Input string was not in a correct format.Couldn't store <> in VOUCHER_NO Column. Expected type is Decimal.

Below is my code

    drpayinfo[0]["VOUCHER_NO"] = e.Record["VOUCHER_NO"];