C#利用pdfsharp转换图片为pdf文件
![preview](https://csdnimg.cn/release/downloadcmsfe/public/img/white-bg.ca8570fa.png)
![preview-icon](https://csdnimg.cn/release/downloadcmsfe/public/img/scale.ab9e0183.png)
![star](https://csdnimg.cn/release/downloadcmsfe/public/img/star.98a08eaa.png)
在IT行业中,C#是一种广泛使用的编程语言,尤其在开发Windows桌面应用、Web应用以及游戏等领域。PDF(Portable Document Format)文件格式则是普遍用于共享和打印文档的标准,因为它能保持原始文档的布局和样式。而PDFsharp是一个开源的.NET库,它允许开发者用C#来创建、修改和操作PDF文件。本文将详细介绍如何使用C#和PDFsharp库将图片转换为PDF文件。 你需要安装PDFsharp库。可以通过NuGet包管理器在Visual Studio中添加PDFsharp。在项目中右键点击“管理NuGet程序包”,搜索“PDFsharp”,然后安装对应的版本。 接下来,我们来看看如何将图片转换为PDF文件。以下是转换过程的基本步骤: 1. 引入必要的命名空间: ```csharp using System.Drawing; using System.IO; using PdfSharp; using PdfSharp.Drawing; using PdfSharp.Pdf; ``` 2. 创建一个新的PDF文档: ```csharp PdfDocument document = new PdfDocument(); ``` 3. 对于每一张图片,创建一个新的PDF页面并添加到文档中: ```csharp PdfPage page = document.AddPage(); XGraphics gfx = XGraphics.FromPdfPage(page); ``` 4. 加载图片并调整大小以适应PDF页面: ```csharp Image image = Image.FromFile("图片路径"); double xScale = page.Width.Point / image.Width; double yScale = page.Height.Point / image.Height; double scale = Math.Min(xScale, yScale); XImage ximage = XImage.FromGdiPlusImage(image); // 保持图片比例缩放 double newX = (page.Width.Point - image.Width * scale) / 2; double newY = (page.Height.Point - image.Height * scale) / 2; gfx.DrawImage(ximage, newX, newY, image.Width * scale, image.Height * scale); ``` 5. 保存PDF文件: ```csharp document.Save("output.pdf"); ``` 以上代码展示了将单张图片转换为PDF的基本流程。如果你需要处理多个图片,可以将这些步骤封装到一个循环或方法中,遍历文件夹中的所有图片并逐个添加到PDF中。 在这个过程中,`XGraphics`类提供了在PDF页面上绘制图像的功能,`XImage`是PDFsharp中的图像对象,可以从GDI+的`Image`对象创建。`PdfPage`和`PdfDocument`则分别代表PDF文件中的一页和整个文档。 为了支持多种图片格式(如bmp,jpg,gif,png,tif,tiff),你需要确保你的代码能够正确处理这些格式的图片。大部分情况下,`Image.FromFile()`方法可以自动识别文件类型并加载,但最好还是进行异常处理,以防遇到不支持的格式。 在实际应用中,你可能还需要考虑其他因素,比如设置PDF页面大小、图片质量、旋转、裁剪等。PDFsharp提供了一个强大且灵活的API,可以满足各种PDF操作需求。通过熟练掌握PDFsharp,你可以轻松地完成图片到PDF的转换,以及其他复杂的PDF处理任务。
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![application/x-rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![application/x-zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![package](https://csdnimg.cn/release/downloadcmsfe/public/img/package.f3fc750b.png)
![folder](https://csdnimg.cn/release/downloadcmsfe/public/img/folder.005fa2e5.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![folder](https://csdnimg.cn/release/downloadcmsfe/public/img/folder.005fa2e5.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![folder](https://csdnimg.cn/release/downloadcmsfe/public/img/folder.005fa2e5.png)
![folder](https://csdnimg.cn/release/downloadcmsfe/public/img/folder.005fa2e5.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![folder](https://csdnimg.cn/release/downloadcmsfe/public/img/folder.005fa2e5.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/EXE.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/TXT.png)
![folder](https://csdnimg.cn/release/downloadcmsfe/public/img/folder.005fa2e5.png)
![folder](https://csdnimg.cn/release/downloadcmsfe/public/img/folder.005fa2e5.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/EXE.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/EXE.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![folder](https://csdnimg.cn/release/downloadcmsfe/public/img/folder.005fa2e5.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
![file-type](https://csdnimg.cn/release/download/static_files/pc/images/minetype/UNKNOWN.png)
- 1
![avatar](https://profile-avatar.csdnimg.cn/ed33ec5250f243bdb75b0bbf153b5e8a_kongwei521.jpg!1)
- 粉丝: 1283
- 资源: 25
我的内容管理 展开
我的资源 快来上传第一个资源
我的收益
登录查看自己的收益我的积分 登录查看自己的积分
我的C币 登录后查看C币余额
我的收藏
我的下载
下载帮助
![voice](https://csdnimg.cn/release/downloadcmsfe/public/img/voice.245cc511.png)
![center-task](https://csdnimg.cn/release/downloadcmsfe/public/img/center-task.c2eda91a.png)
最新资源
![feedback](https://img-home.csdnimg.cn/images/20220527035711.png)
![feedback-tip](https://img-home.csdnimg.cn/images/20220527035111.png)
![dialog-icon](https://csdnimg.cn/release/downloadcmsfe/public/img/green-success.6a4acb44.png)
- 1
- 2
- 3
- 4
- 5
前往页