网站首页 博客 C#将pdf转换成图片
由于需要用到Aspose.Pdf.dll,所以先添加引用
属性和函数定义
private string current_fullpath = ""; //文件完整路径 private string current_dirname = ""; //文件所在目录 private string current_filename = ""; //文件名(不包含后缀) private string current_fileext = ""; //文件后缀 private int current_totalpage = 0; //转换后的图片数量 private string office2ext = "png"; //转换后的图片保存类型 private string logtext; //日志信息 //将Pdf转换成图片 private void ConvertPdf2Image() { Aspose.Pdf.Document pdf = null; try { pdf = new Aspose.Pdf.Document(this.current_fullpath); } catch (Exception e) { this.logtext = ", " + e.Message + "。"; messagetextBox.AppendText(this.logtext); messagetextBox.ScrollToCaret(); } if (pdf != null) { this.current_totalpage = pdf.Pages.Count; for (int i = 1; i <= pdf.Pages.Count; i++) { using (FileStream imageStream = new FileStream(this.current_dirname + "\\" + this.current_filename + "_" + i + "." + this.office2ext, FileMode.Create)) { try { Aspose.Pdf.Devices.Resolution resolution = new Aspose.Pdf.Devices.Resolution(100); Aspose.Pdf.Devices.PngDevice pngDevice = new Aspose.Pdf.Devices.PngDevice(resolution); pngDevice.Process(pdf.Pages[i], imageStream); imageStream.Close(); } catch (Exception e) { this.logtext = ", " + e.Message + ", 第"+ i +"页转换失败。"; messagetextBox.AppendText(this.logtext); messagetextBox.ScrollToCaret(); } } } } else { this.logtext = ", 文件无效或者被加密。"; messagetextBox.AppendText(this.logtext); messagetextBox.ScrollToCaret(); } }
调用方法:
this.current_fullpath = "E:/file/test.pdf"; //文件完整路径 this.current_fullpath = Path.GetFullPath(this.current_fullpath.Replace("/", "\\\\")); //斜杠替换 this.current_dirname = Path.GetDirectoryName(this.current_fullpath); //文件所在目录 this.current_filename = Path.GetFileNameWithoutExtension(this.current_fullpath); //文件名(不包含后缀) this.current_fileext = "pdf"; //文件后缀 this.ConvertPdf2Image();