如何在C#中将图像转换为PDF [代码示例教程]

using IronPdf;
using IronPdf.Imaging;
using System.Linq;

Imports IronPdf
Imports IronPdf.Imaging
Imports System.Linq

public static void Main(string[] args)
{
    // Convert a single image to the PDF document
    PdfDocument doc = ImageToPdfConverter.ImageToPdf(@"D:\Iron Software\ImageToPDF\bird.jpg", IronPdf.Imaging.ImageBehavior.CropPage);

    // Optional: Set document properties
    doc.MetaData.Author = "IronPDF Tutorial";
    doc.MetaData.Title = "Image to PDF Conversion";
    doc.MetaData.Subject = "Converting JPG to PDF";

    // Save the resulting PDF to the specified path
    doc.SaveAs(@"D:\Iron Software\ImageToPDF\bird.pdf");

    Console.WriteLine("PDF created successfully!");
}

Public Shared Sub Main(args As String())
    ' Convert a single image to the PDF document
    Dim doc As PdfDocument = ImageToPdfConverter.ImageToPdf("D:\Iron Software\ImageToPDF\bird.jpg", IronPdf.Imaging.ImageBehavior.CropPage)

    ' Optional: Set document properties
    doc.MetaData.Author = "IronPDF Tutorial"
    doc.MetaData.Title = "Image to PDF Conversion"
    doc.MetaData.Subject = "Converting JPG to PDF"

    ' Save the resulting PDF to the specified path
    doc.SaveAs("D:\Iron Software\ImageToPDF\bird.pdf")

    Console.WriteLine("PDF created successfully!")
End Sub

public static void Main(string[] args)
{
    // Enumerate and filter JPG files from the specified directory
    var imageFiles = System.IO.Directory.EnumerateFiles(@"D:\Iron Software\ImageToPDF\")
                                        .Where(f => f.EndsWith(".jpg") || f.EndsWith(".jpeg"));

    // Sort files alphabetically (optional)
    var sortedImageFiles = imageFiles.OrderBy(f => f);

    // Convert the images to a PDF document
    PdfDocument doc = ImageToPdfConverter.ImageToPdf(sortedImageFiles);

    // Add page numbers to each page
    for (int i = 0; i < doc.PageCount; i++)
    {
        doc.AddTextFooter($"Page {i + 1} of {doc.PageCount}", 
                         FontFamily.Arial, 
                         fontSize: 10,
                         y: 25);
    }

    // Save the combined PDF
    doc.SaveAs(@"D:\Iron Software\ImageToPDF\JpgToPDF.pdf");

    Console.WriteLine($"Combined {doc.PageCount} images into a single PDF!");
}

Imports System
Imports System.IO
Imports System.Linq

Public Module Program
    Public Sub Main(args As String())
        ' Enumerate and filter JPG files from the specified directory
        Dim imageFiles = Directory.EnumerateFiles("D:\Iron Software\ImageToPDF\") _
                            .Where(Function(f) f.EndsWith(".jpg") OrElse f.EndsWith(".jpeg"))

        ' Sort files alphabetically (optional)
        Dim sortedImageFiles = imageFiles.OrderBy(Function(f) f)

        ' Convert the images to a PDF document
        Dim doc As PdfDocument = ImageToPdfConverter.ImageToPdf(sortedImageFiles)

        ' Add page numbers to each page
        For i As Integer = 0 To doc.PageCount - 1
            doc.AddTextFooter($"Page {i + 1} of {doc.PageCount}", 
                              FontFamily.Arial, 
                              fontSize:=10, 
                              y:=25)
        Next

        ' Save the combined PDF
        doc.SaveAs("D:\Iron Software\ImageToPDF\JpgToPDF.pdf")

        Console.WriteLine($"Combined {doc.PageCount} images into a single PDF!")
    End Sub
End Module

// Print using default printer
doc.Print();

// Print silently (without print dialog)
doc.Print(showPreview: false);

// Print to a specific printer
var printerName = "Microsoft Print to PDF";
doc.Print(printerName);

' Print using default printer
doc.Print()

' Print silently (without print dialog)
doc.Print(showPreview:=False)

' Print to a specific printer
Dim printerName As String = "Microsoft Print to PDF"
doc.Print(printerName)