troubleshooting Question

promo code to offer discount

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Codeaddict7423Flag for United States of America asked on
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I have a user control built on Visual Studio 2005 C#. I am using javascript to calculate total cost of attending a conference or workshop.  I am attempting to have a promo code that can be verified against a database table, and if code verification is true, then offer a discount (percentage and/or hard dollar) from the total cost.

Any example providing a promo code verification yes/no that could be then applied to the total cost of conference/workshop would work.

ANY help would be greatly appreciated.
Lead Software Engineer

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