Introduction

public static void MergeSinglePageDocuments()
{
  Console.WriteLine( "=== MERGE SINGLE PAGES DOCUMENTS ===" );

  var file1 = "Animals_Page_1.pdf";
  var file2 = "Animals_Page_2.pdf";
  var outputFileName = "Merged_Animals_1_and_2.pdf";
  var outputPath = MergeSample.MergeOutputDirectory + outputFileName;

  // 1. Load the first document (base)
  using( var doc1 = PdfDocument.Load( MergeSample.MergeSampleResourceDirectory + file1 ) )
  {
    // 2. Load the second document to merge
    using( var doc2 = PdfDocument.Load( MergeSample.MergeSampleResourceDirectory + file2 ) )
    {
      // Merge doc2 at the end of doc1
      doc1.Merge( new MergeOptions( doc2 ) );

      // Save the output document.
      doc1.SaveAs( outputPath );
      Console.WriteLine( "Merged document saved to: " + outputPath );
    }
  }
}