Download OpenXML file without a temporary file

Question

Is there a way to provide a download on an ASP.Net page for a newly created OpenXML (docx) file without saving it in a temporary folder?

On MSDN I just found a tutorial on using a temporary file, but I thought about using WordprocessingDocument.MainDocumentPart.GetStream() and directly writing a stream from.

Answer 1

When creating a document, use MemoryStream as the backup storage. Then create and close the document as usual and transfer the contents of the memory stream to the client.

 using(var stream = new MemoryStream()) { using(var doc = WordprocessingDocument.Create(stream, WordprocessingDocumentType.Document, true) { ... } stream.Position = 0; stream.CopyTo(Response.OutputStream); } 

Do not just grab MainDocumentPart , because, as the name implies, this is just one part of the document package, not all.

You will also need to set response headers for the type of content and its location.

Answer 2

Stream.CopyTo () in .NET 4.0 can help you here.

 WordprocessingDocument.MainDocumentPart.GetStream().CopyTo(Response.OutputStream); 

You still need to set headers for the MIME type, content, etc.