PDF/A是传统PDF格式规范的一个子集，专门用于需要长期保存的PDF文档，PDF/A规范的宗旨是定义了一个独立的、与设备无关的PDF文档。并且使用PDF/A规范创建的PDF文档在将来相当长点的时间范围内也是可读、可显示和存取的，DynamicPDF支持下面的PDF/A级别：

下面是创建PDF/A规范时必须要使用到的和不能使用到的规则和规范：

下面的代码阐释了如何使用DynamicPDF Generator For .NET来创建兼容PDF/A规范的PDF文档：

Document document = new Document();

document.Title = "PDF/A1 Document";

document.Subject = "Document's Subject";

document.Tag = new TagOptions();

document.Author = "MyAuthor";

XmpMetadata xmp = new XmpMetadata();

 

// User has to add PDF/A schema with the conformance level.

PdfASchema pdfaschema = new PdfASchema(PdfAStandard.PDF_A_1a_2005);

xmp.AddSchema(pdfaschema);

 

DublinCoreSchema dc = xmp.DublinCore;

dc.Title.DefaultText = document.Title;

dc.Description.DefaultText = document.Subject;

dc.Creators.Add(document.Author);

dc.Title.AddLang("en-us", "PDF/A1 Document");

document.XmpMetadata = xmp;

 

// Needs iccprofile file to be embedded.

IccProfile iccProfile = new IccProfile(@"C:\Temp\IccProfile\sRGB_IEC61966-2-1_noBPC.icc");

OutputIntent outputIntents = new OutputIntent("", "IEC 61966-2.1 Default RGB colour space - sRGB 1 ", "http://www.color.org", 

 

"sRGB IEC61966-2.1 1", iccProfile);

outputIntents.Version = OutputIntentVersion.PDF_A;

document.OutputIntents.Add(outputIntents);

 

string text = "Hello World...\nFrom DynamicPDF Generator for .NET\nDynamicPDF.com";

OpenTypeFont openTypeFont = new OpenTypeFont("times.ttf");

Label label = new Label(text, 0, 0, 504, 100, openTypeFont, 18, TextAlign.Center, RgbColor.BlueViolet);

 

Page page = new Page(PageSize.Letter, PageOrientation.Portrait, 54.0f);

page.Elements.Add(label);

document.Pages.Add(page);

document.Draw(@"C:/MyDocument.pdf");