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VSD to HTML rendering issue in .NET

Hello, we are using 21.2 version (experienced the same problem with 20.8 too),

Extracting the first page of sample vsd using the following code:

    using (var viewer = new Viewer("sample.vsd"))
    {
        var options = HtmlViewOptions.ForEmbeddedResources("p1.html");
        viewer.View(options, 1);
    }

I downloaded sample vsd from here https://www.microsoft.com/en-us/download/details.aspx?id=28709
It opens fine in ultra office, but converted html does not look right (both included in attached zip file):

vsd_problem.png (43.2 KB)
vsd_problem.zip (264.6 KB)

@eugenekr

Thank you for sharing the details and attaching the source and output files. We’re looking into this issue and will let you know in case of any updates.

Hi @eugenekr
We could reproduce this issue at our end. It’s been logged in our internal issue tracking system with ID VIEWERNET-3101.
For now, you could use this workaround.

using (var viewer = new Viewer("sample.vsd"))
{
    var options = HtmlViewOptions.ForEmbeddedResources(
        (pageNumber) => new MemoryStream(), 
        (pageNumber, pageStream) => {
            var bytes = ((MemoryStream)pageStream).ToArray();
            var html = Encoding.UTF8.GetString(bytes);
            var updated = html.Replace("<title />", string.Empty);
   
            File.WriteAllText("p1.html", updated);
        });
        
    viewer.View(options, 1);
}
1 Like

@eugenekr this issue will be fixed in the current 21.3 release.

1 Like

@eugenekr

GroupDocs.Viewer for .NET v21.3 that includes fix for this issue has been published. You can find the new version at

Have a nice day!

It is working in version 21.5, thanks!

Hi @eugenekr

You’re welcome!