问题
i have a crystal report and there is a field in details section which currently showing for each row. what's the way to set this field to show only once on the very first row?
回答1:
Right-click on the field in Report Designer, select Format Field..., click on the Common tab in the Format Editor dialog, click on the conditional suppression button (the box marked x-2 to the right of Suppress) and enter the formula RecordNumber > 1 . Click Save and close to exit the Suppress Format formula editor, then click OK to exit the Format Editor.
来源：https://stackoverflow.com/questions/4093708/show-only-in-the-first-row-in-crystal-reports-details-section