| FileSpecification Function | ||
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FileSpecification Constructor
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Syntax
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[C#]
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Params
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Notes
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Create a FileSpecification. This constructor which takes a path to a file will embed and compress the file data using using the CompressFlate function. It will also insert appropriate metadata using the EmbeddedFileUpdateMetadata function. The constructor which takes an array of data will similarly embed and compress the data. However since there is no file path metadata will not be assigned.
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Example
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The example below shows how to combine a set of PDF documents into a portfolio. See the Catalog.GetEmbeddedFiles function for how to extract files from a portfolio.
string[] files = {
"SignedDocument.pdf",
"spaceshuttle.pdf",
"Authorization.pdf",
"Portfolio1.pdf",
};
using var doc = new Doc();
var fileSpecs = new List<Tuple<string, FileSpecification>>();
foreach (string file in files) {
byte[] data = null;
using (var subDoc = new Doc()) {
subDoc.Read(Server.MapPath(file));
data = subDoc.GetData();
}
var embedFile = new EmbeddedFile(doc.ObjectSoup, data);
embedFile.CompressFlate();
var fileSpec = new FileSpecification(doc.ObjectSoup);
fileSpec.EmbeddedFile = embedFile;
fileSpec.Uri = file;
string name = Path.GetFileName(file);
fileSpecs.Add(new Tuple<string, FileSpecification>(name, fileSpec));
}
fileSpecs.Sort((a, b) => a.Item1.CompareTo(b.Item1));
// we do not really need to delete existing files but we do so as an example
doc.SetInfo(doc.Root, "/Names*/EmbeddedFiles*/Names:Del", "");
foreach (var fileSpec in fileSpecs) {
doc.SetInfo(doc.Root, "/Names*/EmbeddedFiles*/Names*[]:Text", fileSpec.Item1);
doc.SetInfo(doc.Root, "/Names*/EmbeddedFiles*/Names*[]:Ref", fileSpec.Item2.ID);
}
// add placeholder text
doc.AddText("This is a Adobe Acrobat Portfolio file. Please use Adobe Acrobat software to open it.");
// save
doc.ObjectSoup.Catalog.Version = 17;
doc.SaveOptions.Linearize = false;
doc.SetInfo(doc.Root, "/Collection*/D:Text", files[0]);
doc.Save(Server.MapPath("createportfolio.pdf"));
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