如果您想要将多个图像合并为一个文件以便于分发或存储,将它们转换为单个 PDF 文档是一个很好的解决方案。这一过程不仅节省空间,还确保所有图像都保存在一个文件中,方便共享或传输。在本文中,您将学习如何使用Spire.PDF for .NET?在 C# 和 VB.NET 中将多个图像合并到单个 PDF 文档中。
Spire.Doc?是一款专门对 Word 文档进行操作的 类库。在于帮助开发人员无需安装 Microsoft Word情况下,轻松快捷高效地创建、编辑、转换和打印 Microsoft Word 文档。拥有近10年专业开发经验Spire系列办公文档开发工具,专注于创建、编辑、转换和打印Word/PDF/Excel等格式文件处理,小巧便捷。?
E-iceblue?功能类库Spire 系列文档处理组件均由中国本土团队研发,不依赖第三方软件,不受其他国家的技术或法律法规限制,同时适配国产操作系统如中科方德、中标麒麟等,兼容国产文档处理软件 WPS(如 .wps/.et/.dps 等格式?(qun:767755948)
Spire.PDF for.net下载? ?Spire.PDF for java下载
首先,您需要将 Spire.PDF for .NET 包中包含的 DLL 文件添加为 .NET 项目中的引用。DLL 文件可以从此链接下载或通过NuGet安装。
PM> Install-Package Spire.PDF
为了将文件夹中的所有图像转换为 PDF,我们迭代每个图像,向 PDF 添加一个与图像大小相同的新页面,然后将图像绘制到新页面上。以下是详细步骤。
【C#】
using Spire.Pdf; using Spire.Pdf.Graphics; using System.Drawing; namespace ConvertMultipleImagesIntoPdf { class Program { static void Main(string[] args) { //Create a PdfDocument object PdfDocument doc = new PdfDocument(); //Set the page margins to 0 doc.PageSettings.SetMargins(0); //Get the folder where the images are stored DirectoryInfo folder = new DirectoryInfo(@"C:\Users\Administrator\Desktop\Images"); //Iterate through the files in the folder foreach (FileInfo file in folder.GetFiles()) { //Load a particular image Image image = Image.FromFile(file.FullName); //Get the image width and height float width = image.PhysicalDimension.Width; float height = image.PhysicalDimension.Height; //Add a page that has the same size as the image PdfPageBase page = doc.Pages.Add(new SizeF(width, height)); //Create a PdfImage object based on the image PdfImage pdfImage = PdfImage.FromImage(image); //Draw image at (0, 0) of the page page.Canvas.DrawImage(pdfImage, 0, 0, pdfImage.Width, pdfImage.Height); } //Save to file doc.SaveToFile("CombinaImagesToPdf.pdf"); doc.Dispose(); } } }
【VB.NET】
Imports Spire.Pdf Imports Spire.Pdf.Graphics Imports System.Drawing Namespace ConvertMultipleImagesIntoPdf Class Program Shared Sub Main(ByVal args() As String) 'Create a PdfDocument object Dim doc As PdfDocument = New PdfDocument() 'Set the page margins to 0 doc.PageSettings.SetMargins(0) 'Get the folder where the images are stored Dim folder As DirectoryInfo = New DirectoryInfo("C:\Users\Administrator\Desktop\Images") 'Iterate through the files in the folder Dim file As FileInfo For Each file In folder.GetFiles() 'Load a particular image Dim image As Image = Image.FromFile(file.FullName) 'Get the image width and height Dim width As single = image.PhysicalDimension.Width Dim height As single = image.PhysicalDimension.Height 'Add a page that has the same size as the image Dim page As PdfPageBase = doc.Pages.Add(New SizeF(width,height)) 'Create a PdfImage object based on the image Dim pdfImage As PdfImage = PdfImage.FromImage(image) 'Draw image at (0, 0) of the page page.Canvas.DrawImage(pdfImage, 0, 0, pdfImage.Width, pdfImage.Height) Next 'Save to file doc.SaveToFile("CombinaImagesToPdf.pdf") doc.Dispose() End Sub End Class End Namespace
以上便是如何在C#/VB.NET中将多个图像转换为单个 PDF,如果您有其他问题也可以继续浏览本系列文章,获取相关教程~