Hi
Thank you for your interest in Aspose.Words. I think that this is impossible.
This save method works like the following code.
MemoryStream stream = new MemoryStream();
doc.Save(stream, SaveFormat.Doc);
byte[] bytes = stream.GetBuffer();
Response.Clear();
// Specify the document type.
Response.ContentType = "application/msword";
// Other options:
// Response.ContentType = "text/plain"
// Response.ContentType = "text/html"
// Specify how the document is sent to the browser.
Response.AddHeader("content-disposition", "attachment; filename=test.doc");
// Another option could be:
// Response.AddHeader "content-disposition","inline; filename=MyDocument.doc";
// Get data bytes from the stream and send it to the response.
Response.BinaryWrite(bytes);
Response.End();