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Question:

Reading XMP data

Jan 22 '14 at 10:18

I am trying to read XMP from a jpg but with no luck. Running in VS2013, using latest C# x64 chilkat XMP download, .net 4.5,

The image has 5 embedded xmp docs, when I break into line xmp.GetEmbedded(i), doc is always empty. I have verified valid XMP exists in the photo using another XMP viewer.

        var xmp = new Xmp();
        xmp.UnlockComponent("anything for 30-day trial");
        xmp.LoadAppFile(@"c:\_dev\testphotos\june 28 005.JPG");

        var n = xmp.NumEmbedded;

        for (var i =0; i<n; i++)
        {
            var doc = xmp.GetEmbedded(i);
            Debug.WriteLine(doc.Content);
        }

What am I missing?

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Answer

Thanks. I received your email with the JPG, and I will test it now..

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Answer

I tested, but did not find any problem. I noticed two things: You're not checking the return value of UnlockComponent or LoadAppFile. Check that these methods return true for success, and if not, then examine the contents of the LastErrorText.

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Answer

OK found the problem.

I misinterpreted the docs. I was using Chilkat.Xml.Content but should have been using Chilkat.Xml.GetXml().

When I switched it works fine.