The easiest way would be to add a formula to your report called SuppressFooter and just have it return the value False. Then put this in the Suppress formula for the footer in the Section Expert. To test it, run the report and you should see the footer always.
Second, go into your VB.NET app and prior to calling the Export function, set that formula to be True. The following code sample could be used:
myReport.DataDefinition.FormulaFields("SuppressFooter").Text = "True"
Replace "myReport" with the variable name of your report object.
It may be helpful for you to pick up a copy of my CR Encylcopedia v2 which has tons of code samples for VB.NET/C# integration with Crystal Reports.
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Edited by BrianBischof - 09 Oct 2009 at 11:06am