How to Save a MemoryStream document in same format used to open document

[mmsemaj]

I have a document I've pulled from a database and put into a MemoryStream object. I have opened up the document and made the necessary changes, and now I want to save the document in the same format with which it was opened.

MemoryStream ms = getDocFromDatabase();
Aspose.Words.Document theDoc = new Aspose.Words.Document(ms);
//various and sundry processing
theDoc.Save(ms, ???);

I'm not sure I will know what the format should be. Is there some way to save in the same format that opened the document? There is Aspose.Words.SaveFormat.Odt, but I don't think that that is what I'm looking for. There is also Aspose.Words.SaveFormat.None, but I don't think that that is what I'm looking for. Would I parse the extension of the document and modify the save format accordingly?

Any assistance would be appreciated. Have a nice day!

[alexey.noskov]

Hi<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

Thanks for your inquiry. You can use DetectFileFormat method in this case. Please see the following link for more information.

http://www.aspose.com/documentation/file-format-components/aspose.words-for-.net-and-java/aspose.words.document.detectfileformat_overload_2.html

Also here is code example:

byte[] fileBytes = File.ReadAllBytes(@"Test131\in.doc");

MemoryStream docStream = new MemoryStream(fileBytes);

//Detect format of input document

LoadFormat inputFormat = Document.DetectFileFormat(docStream);

//Open document

Document doc = new Document(docStream);

//Do something with document

DocumentBuilder builder = new DocumentBuilder(doc);

builder.Write("Hello world!!!");

//Detect output format

SaveFormat outputFormat = SaveFormat.Doc;

string extension = ".doc";

switch (inputFormat)

{

case LoadFormat.Doc:

outputFormat = SaveFormat.Doc;

extension = ".doc";

break;

case LoadFormat.Docx:

outputFormat = SaveFormat.Docx;

extension = ".docx";

break;

case LoadFormat.Html:

outputFormat = SaveFormat.Html;

extension = ".html";

break;

case LoadFormat.Rtf:

outputFormat = SaveFormat.Rtf;

extension = ".rtf";

break;

case LoadFormat.WordML:

outputFormat = SaveFormat.WordML;

extension = ".xml";

break;

}

//Save document

doc.Save(String.Format(@"Test131\out{0}", extension), outputFormat);

Hope this helps.

Best regards.

[jay_bp]

This is still asking us to do the conversion manually.

Does a method exist to transform a LoadFormat to a SaveFormat value?

var saveformat = LoadToSaveFormat(doc.OriginalLoadFormat);
doc.Save(streamOut, saveformat);

Does Aspose provide a simple method in place of the LoadToSaveFormat call I put in the code?

[awais.hafeez]

Hi Jay,

Thanks for your inquiry.

Sure, you can convert a LoadFormat value to a SaveFormat value (if possible) by using the FileFormatUtil.LoadFormatToSaveFormat method. The following code snippet shows how to use the FileFormatUtil methods to detect the format of a document without any extension and save it with the correct file extension.

// Load the document without a file extension into a stream and
use the DetectFileFormat method to detect it’s format. These are both times
where you might need extract the file format as it’s not visible

FileStream docStream = File.OpenRead(MyDir + "Document.FileWithoutExtension"); // The file format of this document is actually ".doc"

FileFormatInfo info = FileFormatUtil.DetectFileFormat(docStream);

// Retrieve the LoadFormat of the document.

LoadFormat loadFormat = info.LoadFormat;

// Let's show the different methods of converting LoadFormat enumerations to SaveFormat enumerations.

//

// Method #1

// Convert the LoadFormat to a string first for working with. The string will include the leading dot in front of the extension.

string fileExtension = FileFormatUtil.LoadFormatToExtension(loadFormat);

// Now convert this extension into the corresponding SaveFormat enumeration

SaveFormat saveFormat = FileFormatUtil.ExtensionToSaveFormat(fileExtension);

// Method #2

// Convert the LoadFormat enumeration directly to the SaveFormat enumeration.

saveFormat = FileFormatUtil.LoadFormatToSaveFormat(loadFormat);

// Load a document from the stream.

Document doc = new Document(docStream);

// Save the document with the original file name, " Out" and the document's file extension.

doc.Save(MyDir + "Document.WithFileExtension Out" + FileFormatUtil.SaveFormatToExtension(saveFormat));

I hope, this helps.

Best regards,

[jay_bp]

This helps very much! Thank you.

[awais.hafeez]

Hi Jay,

Thanks for your feedback. Please let us know any time you have any further queries. We are always glad to help you.

Best regards,