That's a very good candidate for chain of responsibility pattern.


>How about this case - is there a way to simplify? (In VFP it's case expression):
>
>

> Boolean isRedemptionValid = row.Field<Boolean>("IsRedemptionValid"),
>                        isDateValid = row.Field<Boolean>("IsDateValid"),
>                        isTimeValid = row.Field<Boolean>("IsTimeValid"),
>                        isDowValid = row.Field<Boolean>("IsDowValid");
>
>                    if (isRedemptionValid && isDateValid && isTimeValid && isDowValid)
>                        {
>                            availability = "Available for Redemption";
>                        }
>                    else
>                        if (!isRedemptionValid)
>                        {
>                            availability = "Not enough number of uses";
>                        }
>                        else
>                            if (!isDateValid)
>                            {
>                                availability = "Not available in the date range";
>                            }
>                            else
>                                if (!isTimeValid)
>                                {
>                                    availability = "Not available in the time range";
>                                }
>                                else
>                                {
>                                    availability = "Not available on that day of the week";
>                                }