PDFsharp & MigraDoc Foundation

I did some more testing and it appears that the "only" time the pages get blanked out when adding a password to the PDF file using the PdfSharp-WPF assembly is when the file was created by exporting from the SQL Report Viewer.

For the DeviceSettings parameter for the Render method on the ReportExecutionService object, pass this value:

theDeviceSettings = "<DeviceInfo><HumanReadablePDF>True</HumanReadablePDF></DeviceInfo>";

This disables PDF file compression for SSRS 2008. Then, PDFSharp is able to handle the resulting uncompressed PDF file. (Note: SSRS 2005 ignores this setting so it can be passed to both SSRS versions.)