在 ASP.NET Core MVC 中建立 PDF 檢視器 | 教學

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

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

using IronPdf;

// Load the PDF document from the file system
var pdf = PdfDocument.FromFile("report.pdf");

// Get the zero-based index of the last page
int lastPageIndex = pdf.PageCount - 1;

// Copy the last page into a standalone PdfDocument
var pageToCopy = pdf.CopyPage(lastPageIndex);

// Insert the copied page at position 0 (the first page slot)
pdf.InsertPdf(pageToCopy, 0);

// The original last page has shifted down by one; remove it
pdf.RemovePage(lastPageIndex + 1);

// Save the reordered document to a new file
pdf.SaveAs("report-reorganized.pdf");

Imports IronPdf

' Load the PDF document from the file system
Dim pdf = PdfDocument.FromFile("report.pdf")

' Get the zero-based index of the last page
Dim lastPageIndex As Integer = pdf.PageCount - 1

' Copy the last page into a standalone PdfDocument
Dim pageToCopy = pdf.CopyPage(lastPageIndex)

' Insert the copied page at position 0 (the first page slot)
pdf.InsertPdf(pageToCopy, 0)

' The original last page has shifted down by one; remove it
pdf.RemovePage(lastPageIndex + 1)

' Save the reordered document to a new file
pdf.SaveAs("report-reorganized.pdf")

using IronPdf;
using System.Collections.Generic;

// Load the quarterly report
var pdf = PdfDocument.FromFile("quarterly-report.pdf");

// Copy pages at indexes 1 and 2 (the second and third pages)
var selectedPages = pdf.CopyPages(new List<int> { 1, 2 });

// Append the copied pages to the end of the original document
var result = PdfDocument.Merge(pdf, selectedPages);

// Remove the originals at their former positions (now indexes 1 and 2)
result.RemovePages(new List<int> { 1, 2 });

// Write the reordered result to a new path
result.SaveAs("quarterly-report-reordered.pdf");

Imports IronPdf
Imports System.Collections.Generic

' Load the quarterly report
Dim pdf = PdfDocument.FromFile("quarterly-report.pdf")

' Copy pages at indexes 1 and 2 (the second and third pages)
Dim selectedPages = pdf.CopyPages(New List(Of Integer) From {1, 2})

' Append the copied pages to the end of the original document
Dim result = PdfDocument.Merge(pdf, selectedPages)

' Remove the originals at their former positions (now indexes 1 and 2)
result.RemovePages(New List(Of Integer) From {1, 2})

' Write the reordered result to a new path
result.SaveAs("quarterly-report-reordered.pdf")

using IronPdf;

// Load the source and destination documents
var sourceDoc = PdfDocument.FromFile("source-document.pdf");
var destinationDoc = PdfDocument.FromFile("destination-document.pdf");

// Extract the first page (index 0) from the source document
var pageToMove = sourceDoc.CopyPage(0);

// Insert the extracted page at position 2 in the destination (third page slot)
destinationDoc.InsertPdf(pageToMove, 2);

// Save the updated destination document
destinationDoc.SaveAs("destination-document-updated.pdf");

// Remove the transferred page from the source and save separately
sourceDoc.RemovePage(0);
sourceDoc.SaveAs("source-document-updated.pdf");

Imports IronPdf

' Load the source and destination documents
Dim sourceDoc = PdfDocument.FromFile("source-document.pdf")
Dim destinationDoc = PdfDocument.FromFile("destination-document.pdf")

' Extract the first page (index 0) from the source document
Dim pageToMove = sourceDoc.CopyPage(0)

' Insert the extracted page at position 2 in the destination (third page slot)
destinationDoc.InsertPdf(pageToMove, 2)

' Save the updated destination document
destinationDoc.SaveAs("destination-document-updated.pdf")

' Remove the transferred page from the source and save separately
sourceDoc.RemovePage(0)
sourceDoc.SaveAs("source-document-updated.pdf")

using IronPdf;

// Use 'using' declarations to ensure deterministic disposal
using var source = PdfDocument.FromFile("source-large.pdf");
using var destination = PdfDocument.FromFile("destination-large.pdf");

var pageToTransfer = source.CopyPage(0);
destination.InsertPdf(pageToTransfer, 0);

destination.SaveAs("destination-updated.pdf");
source.RemovePage(0);
source.SaveAs("source-updated.pdf");

Imports IronPdf

' Use 'Using' blocks to ensure deterministic disposal
Using source = PdfDocument.FromFile("source-large.pdf")
    Using destination = PdfDocument.FromFile("destination-large.pdf")
        Dim pageToTransfer = source.CopyPage(0)
        destination.InsertPdf(pageToTransfer, 0)

        destination.SaveAs("destination-updated.pdf")
        source.RemovePage(0)
        source.SaveAs("source-updated.pdf")
    End Using
End Using