Aspose.Pdf允許你設置PDF文件的特定信息，比如作者、創建日期、主題和標題等。進行著些信息設置,您需要創建一個DocumentInfo對象并單獨設置這些屬性的值。一旦這些屬性值完成設置，你就僅僅需要使用文檔對象的save方法保存更新后的文檔。

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下面是使用Aspose.Pdf設置PDF文件信息的示例代碼

C#

//open document
Document pdfDocument = new Document("input.pdf");
//specify document information
DocumentInfo docInfo = new DocumentInfo(pdfDocument);
docInfo.Author ="Aspose";
docInfo.CreationDate =DateTime.Now;
docInfo.Keywords ="Aspose.Pdf, DOM, API";
docInfo.ModDate =DateTime.Now;
docInfo.Subject ="PDF Information";
docInfo.Title ="Setting PDF Document Information";
//save output document
pdfDocument.Save("output.pdf");

VB.NET

'open document
Dim pdfDocument As New Document("input.pdf")
'specify document information
Dim docInfo As New DocumentInfo(pdfDocument)
docInfo.Author = "Aspose"
docInfo.CreationDate = DateTime.Now
docInfo.Keywords = "Aspose.Pdf, DOM, API"
docInfo.ModDate = DateTime.Now
docInfo.Subject = "PDF Information"
docInfo.Title = "Setting PDF Document Information"
'save output document
pdfDocument.Save("output.pdf")