如何以程式方式重新排列PDF頁面在C#中

dotnet add package IronPdf

IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY"

using IronPdf;

// Load the source document from file path
var pdf = PdfDocument.FromFile("quarterly-report.pdf");

// Define new page order: move page 3 to front, then pages 1, 2, 0
int[] pageOrder = new int[] { 3, 1, 2, 0 };

// Copy each requested page into its own PdfDocument
var pageDocs = new List<PdfDocument>();
foreach (var idx in pageOrder)
{
    // CopyPage returns a PdfDocument containing only that page
    var single = pdf.CopyPage(idx);
    pageDocs.Add(single);
}

// Merge the single-page docs into one ordered document
using var merged = PdfDocument.Merge(pageDocs.ToArray());

// Save the new ordered PDF
merged.SaveAs("report-reorganized.pdf");

Imports IronPdf

' Load the source document from file path
Dim pdf As PdfDocument = PdfDocument.FromFile("quarterly-report.pdf")

' Define new page order: move page 3 to front, then pages 1, 2, 0
Dim pageOrder As Integer() = {3, 1, 2, 0}

' Copy each requested page into its own PdfDocument
Dim pageDocs As New List(Of PdfDocument)()
For Each idx In pageOrder
    ' CopyPage returns a PdfDocument containing only that page
    Dim single As PdfDocument = pdf.CopyPage(idx)
    pageDocs.Add(single)
Next

' Merge the single-page docs into one ordered document
Using merged As PdfDocument = PdfDocument.Merge(pageDocs.ToArray())
    ' Save the new ordered PDF
    merged.SaveAs("report-reorganized.pdf")
End Using

using IronPdf;

// Load the input PDF file
var pdf = PdfDocument.FromFile("presentation.pdf");
int sourceIndex = 1;   // page to move
int targetIndex = 3;   // destination position

// Track direction to handle index shift after removal
bool movingForward = targetIndex > sourceIndex;

// 1. Copy the page to move (produces a one-page PdfDocument)
var pageDoc = pdf.CopyPage(sourceIndex);

// 2. Remove the original page from its current position
pdf.RemovePage(sourceIndex);

// 3. Adjust target index if moving forward (removal shifts remaining pages left)
if (movingForward)
    targetIndex--;

// 4. Insert the copied page at the target position
pdf.InsertPdf(pageDoc, targetIndex);

// Save the result
pdf.SaveAs("presentation-reordered.pdf");

Imports IronPdf

' Load the input PDF file
Dim pdf = PdfDocument.FromFile("presentation.pdf")
Dim sourceIndex As Integer = 1   ' page to move
Dim targetIndex As Integer = 3   ' destination position

' Track direction to handle index shift after removal
Dim movingForward As Boolean = targetIndex > sourceIndex

' 1. Copy the page to move (produces a one-page PdfDocument)
Dim pageDoc = pdf.CopyPage(sourceIndex)

' 2. Remove the original page from its current position
pdf.RemovePage(sourceIndex)

' 3. Adjust target index if moving forward (removal shifts remaining pages left)
If movingForward Then
    targetIndex -= 1
End If

' 4. Insert the copied page at the target position
pdf.InsertPdf(pageDoc, targetIndex)

' Save the result
pdf.SaveAs("presentation-reordered.pdf")

using IronPdf;
using System.IO;

// Load PDF from byte array (simulating input from a database or API response)
byte[] pdfBytes = File.ReadAllBytes("report-with-blank.pdf");
var pdf = new PdfDocument(pdfBytes);

// Delete the blank page at index 2 (zero-based)
pdf.RemovePage(2);

// Reorder remaining pages: new sequence from a four-page document
var reorderedPdf = pdf.CopyPages(new int[] { 1, 0, 2, 3 });

// Export to MemoryStream for further processing (e.g., HTTP response body)
MemoryStream outputStream = reorderedPdf.Stream;

// Or save directly using the BinaryData property
File.WriteAllBytes("cleaned-report.pdf", reorderedPdf.BinaryData);

Imports IronPdf
Imports System.IO

' Load PDF from byte array (simulating input from a database or API response)
Dim pdfBytes As Byte() = File.ReadAllBytes("report-with-blank.pdf")
Dim pdf As New PdfDocument(pdfBytes)

' Delete the blank page at index 2 (zero-based)
pdf.RemovePage(2)

' Reorder remaining pages: new sequence from a four-page document
Dim reorderedPdf = pdf.CopyPages(New Integer() {1, 0, 2, 3})

' Export to MemoryStream for further processing (e.g., HTTP response body)
Dim outputStream As MemoryStream = reorderedPdf.Stream

' Or save directly using the BinaryData property
File.WriteAllBytes("cleaned-report.pdf", reorderedPdf.BinaryData)

using IronPdf;

// Load two separate PDF files
var docA = PdfDocument.FromFile("section-a.pdf");
var docB = PdfDocument.FromFile("section-b.pdf");

// Reorder pages within each source document
var reorderedA = docA.CopyPages(new int[] { 1, 0, 2 });
var reorderedB = docB.CopyPages(new int[] { 0, 2, 1 });

// Merge into a single output document
using var combined = PdfDocument.Merge(reorderedA, reorderedB);
combined.SaveAs("combined-report.pdf");

Imports IronPdf

' Load two separate PDF files
Dim docA = PdfDocument.FromFile("section-a.pdf")
Dim docB = PdfDocument.FromFile("section-b.pdf")

' Reorder pages within each source document
Dim reorderedA = docA.CopyPages(New Integer() {1, 0, 2})
Dim reorderedB = docB.CopyPages(New Integer() {0, 2, 1})

' Merge into a single output document
Using combined = PdfDocument.Merge(reorderedA, reorderedB)
    combined.SaveAs("combined-report.pdf")
End Using