The sample demonstrates how to merge multiple PDF documents to one PDF document.
(NO screenshot)
using System; using Spire.Pdf; namespace MergeDocuments { class Program { static void Main(string[] args) { //pdf document list String[] files = new String[] { @"Sample3.pdf", @"Sample2.pdf", @"Sample1.pdf" }; //open pdf documents PdfDocument[] docs = new PdfDocument[files.Length]; for (int i = 0; i < files.Length; i++) { docs[i] = new PdfDocument(files[i]); } //append document docs[0].AppendPage(docs[1]); //import page for (int i = 0; i < docs[2].Pages.Count; i = i + 2) { docs[0].InsertPage(docs[2], i); } //Save pdf file. docs[0].SaveToFile("MergeDocuments.pdf"); //close foreach (PdfDocument doc in docs) { doc.Close(); } //Launching the Pdf file. System.Diagnostics.Process.Start("MergeDocuments.pdf"); } } }
Imports Spire.Pdf Namespace MergeDocuments Friend Class Program Shared Sub Main(ByVal args() As String) 'pdf document list Dim files() As String = {"Sample3.pdf", "Sample2.pdf", "Sample1.pdf"} 'open pdf documents Dim docs(files.Length - 1) As PdfDocument For i As Integer = 0 To files.Length - 1 docs(i) = New PdfDocument(files(i)) Next i 'append document docs(0).AppendPage(docs(1)) 'import page For i As Integer = 0 To docs(2).Pages.Count - 1 Step 2 docs(0).InsertPage(docs(2), i) Next i 'Save pdf file. docs(0).SaveToFile("MergeDocuments.pdf") 'close For Each doc As PdfDocument In docs doc.Close() Next doc 'Launching the Pdf file. Process.Start("MergeDocuments.pdf") End Sub End Class End Namespace