1) If your application has RDL reports, you can use Aspose.Slides for reporting services with limited option as it does not provide the configuration features. That is, it exports the RDL report to PPT / PPTX as it is, in the similar way as you can export RDL report to TIFF. However, you can export data to PPT / PPTX with full programming features using Aspose.Slides for .NET .
2) For exporting data from Excel to PowerPoint, you will require two components. That is, Aspose.Slides for .NET and Aspose.Cells for .NET
Can you please explain what specific code example you need?