public static void Run()
{
// ExStart:ConcatenatePdfFiles
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_AsposePdf_Pages();
// Open first document
Document pdfDocument1 = new Document(dataDir + "Concat1.pdf");
// Open second document
Document pdfDocument2 = new Document(dataDir + "Concat2.pdf");
// Add pages of second document to the first
pdfDocument1.Pages.Add(pdfDocument2.Pages);
dataDir = dataDir + "ConcatenatePdfFiles_out.pdf";
// Save concatenated output file
pdfDocument1.Save(dataDir);
// ExEnd:ConcatenatePdfFiles
System.Console.WriteLine("\nPDFs are concatenated successfully.\nFile saved at " + dataDir);
}
}