Note: Add a reference in your project to PDFstampNET assembly. To do this: a. On the Project menu, click Add Reference; b. On the .NET tab, locate PDFstampNET and then click Select; c. Click OK in the Add References dialog box to accept your selections.

   PDFstamp.Neevia NVstamp = new PDFstamp.Neevia();

   int indx = NVstamp.CreateNewStamp();
   NVstamp.get_Stamps(indx).StampType = 2;
   NVstamp.get_Stamps(indx).Name = "Stamp1";
   NVstamp.get_Stamps(indx).ImageFile = @"c:\stamp.jpg";
   NVstamp.get_Stamps(indx).X = "center";
   NVstamp.get_Stamps(indx).Y = "center";
   NVstamp.get_Stamps(indx).PlaceAs = 1;

   int retVal;
   retVal = NVstamp.StampPDF(@"c:\in.pdf", @"c:\out.pdf");

   if (retVal != 0)
   {
       MessageBox.Show("Error code = " + retVal.ToString());
   }
   else
   {
       MessageBox.Show("Done");
   }