Saving Visio File as HTML to a Stream Writes Files To Disk

Aspose.Diagram Product Family
1

When savings a Visio document using the supplied code on the website page Convert Visio to HTML format|Documentation to a stream, the Aspose Diagram library is writing files to c:\main_files directory. It writes various HTML files and images files. This is not the expected nor desired outcome when saving to a stream. We are using the latest version of the Aspose Diagram product. Is this a bug or is there another way to save the entire contents of an HTML page to a single page and to a stream?

We’ve also attempted to insert and HTMLSaveOptions() object with the “SaveAsSingleFile” property set to “true” to no avail.

2

@srtrout_nsa_gov
Please refer to the sample code:

      string outputDir = dataDir + @"output\";
        // Create digaram
        Diagram diagram = new Diagram(dataDir + "sample.vsdx");

        Aspose.Diagram.Saving.HTMLSaveOptions options = new HTMLSaveOptions();
        options.StreamProvider = new ExportStreamProvider(outputDir);

        // Save into .html using HTMLSaveOptions 
        diagram.Save(dataDir + "output_out.html", options);

Here is the code for ExportStreamProvider class which implements IStreamProvider interface used inside the above code.

public class ExportStreamProvider : IStreamProvider
{
private string outputDir;

    public ExportStreamProvider(string dir)
    {
        outputDir = dir;
    }

    public void InitStream(StreamProviderOptions options)
    {
        string path = outputDir + Path.GetFileName(options.DefaultPath);
        options.CustomPath = path;
        Directory.CreateDirectory(Path.GetDirectoryName(path));
        options.Stream = File.Create(path);
    }

    public void CloseStream(StreamProviderOptions options)
    {
        if (options != null && options.Stream != null)
        {
            options.Stream.Close();
        }
    }
}

Please refer to the following documents:

3

Thank you for the response, but unfortunately this is not very helpful. The code sample you provided merely displaces writing files to “c:\main_files” by default to a different directory. The goal here is to not have files written to disk at all and to use streams for processing, ultimately returning a single stream that has all the components embedded in the stream as can be done with various other Aspose libraries.

When I set the HTMLSaveOptions.SaveAsSingleFile property to “true” and set the StreamProviderOptions.Stream to our output stream (a System.IO.MemoryStream), the output is garbled. Can you provide sample code to provide a single output stream to which to save a converted Visio Diagram as HTML with all objects embedded?

Thank you.

4

@srtrout_nsa_gov
We are checking this issue and will soon get back to you.
Thanks.

5

@srtrout_nsa_gov
We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): DIAGRAMNET-53190

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.

6

The issues you have found earlier (filed as DIAGRAMNET-53190) have been fixed in this update. This message was posted using Bugs notification tool by philip.zhou