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Aspose.PDF 允许使用 Document 类创建 PDF 投资组合文档。在使用 FileSpecification 类获取文件后,将文件添加到 Document.Collection 对象中。当文件添加完成后,使用 Document 类的 Save 方法保存投资组合文档。
以下示例使用 Microsoft Excel 文件、Word 文档和图像文件创建 PDF 投资组合。
下面的代码生成以下投资组合。
以下代码片段也可以与 Aspose.PDF.Drawing 库一起使用。
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void CreatePortfolio()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_TechnicalArticles();
// Create PDF document
using (var document = new Aspose.Pdf.Document())
{
// Instantiate document Collection object
document.Collection = new Aspose.Pdf.Collection();
// Get Files to add to Portfolio
var excel = new Aspose.Pdf.FileSpecification(dataDir + "HelloWorld.xlsx");
var word = new Aspose.Pdf.FileSpecification(dataDir + "HelloWorld.docx");
var image = new Aspose.Pdf.FileSpecification(dataDir + "aspose-logo.jpg");
// Provide description of the files
excel.Description = "Excel File";
word.Description = "Word File";
image.Description = "Image File";
// Add files to document collection
document.Collection.Add(excel);
document.Collection.Add(word);
document.Collection.Add(image);
// Save PDF document
document.Save(dataDir + "CreatePortfolio_out.pdf");
}
}
PDF 投资组合允许您将来自多种来源的内容(例如 PDF、Word、Excel、JPEG 文件)汇集到一个统一的容器中。原始文件保留其各自的身份,但被组装成一个 PDF 投资组合文件。用户可以独立于其他组件文件打开、阅读、编辑和格式化每个组件文件。
Aspose.PDF 允许使用 Document 类创建 PDF 投资组合文档。它还提供从 PDF 投资组合中提取文件的能力。
以下代码片段展示了从 PDF 投资组合中提取文件的步骤。
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExtractPortfolioFiles()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_TechnicalArticles();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "PDFPortfolio.pdf"))
{
// Get collection of embedded files
Aspose.Pdf.EmbeddedFileCollection embeddedFiles = document.EmbeddedFiles;
// Iterate through individual file of Portfolio
foreach (Aspose.Pdf.FileSpecification fileSpecification in embeddedFiles)
{
// Get the attachment and write to file or stream
byte[] fileContent = new byte[fileSpecification.Contents.Length];
fileSpecification.Contents.Read(fileContent, 0, fileContent.Length);
string filename = Path.GetFileName(fileSpecification.Name);
// Save the extracted file to some location
using (FileStream fileStream = new FileStream(dataDir + filename + "_out", FileMode.Create))
{
fileStream.Write(fileContent, 0, fileContent.Length);
}
}
}
}
为了从 PDF 投资组合中删除文件,请尝试使用以下代码行。
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void RemovePortfolioFiles()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_TechnicalArticles();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "PDFPortfolio.pdf"))
{
document.Collection.Delete();
// Save PDF document
document.Save(dataDir + "NoPortFolio_out.pdf");
}
}
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