replace strings with enums in switch statment

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enter code hereI'm using Visual Studio 2008 and trying to convert this switch statement

        switch (salesOrderPayment.PaymentCardKey.ToUpper()) {
            case "MC":
                ValidateCreditCard(salesOrderPayment,errorMessages);
                break;
            case "VISA":
                ValidateCreditCard(salesOrderPayment, errorMessages);
                break;
            case "TELECHECK":
                //ValidateTelecheck(salesOrderPayment, errorMessages);
                ValidateAchCheck(salesOrderPayment, errorMessages);
                break;
            case "ACH":
                ValidateAchCheck(salesOrderPayment, errorMessages);
                break;

To use an enum that I have created

    public enum PaymentType {
        MC,
        VISA,
        AMEX,
        TELECHECK,
        CASH,
        ACH }

I've tried this

switch (Enum.Parse(typeof(PaymentType),salesOrderPayment.PaymentCardKey.ToUpper()))

but get red squiggly lines and when i hover over it says "A value of an integral type expected"

asked 1 min ago

Gustave Moreau

860