I have a report (RDLC) in my web application to which I need to add a new column. So I added the new column to the underlying dataset, but when I go to the report to refresh the dataset so I can include this new column in the report, all of the dataset columns disappear. I've done this sort of thing numerous times in the past so I'm perplexed as to what might causing this behavior. Any suggestions on what to check for?
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