I have two lists: one with Upcoming Events as items, and one for Registrants. They are tied by an Event ID (as a common field) that we create for each event. An event may or may not have a fee associated with it; the fee is a column in the Upcoming
When someone signs up for an Event, I have customized a version of Newform to collect information for the Registrants list. I have fields for Cardholder payment information in the Newform1, which I would like to hide if the fee in the Upcoming
Events list equals zero. I have looked at Conditional Formatting, but don't see a way to look outside of the Registrants list for the info.
I have read about event receivers, but I don't know or have Visual Studio. I was thinking about a workflow, but the registrants may be unauthenticated users (anonymous), which creates an error page to those users when workflows are triggered.
The Event ID gets populated to the Registrants list via some custom coding done by someone else (who is no longer available to be consulted). If condtional formatting based on a value in a different list is not possible, I would be interested in any ideas
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