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(C#) Update a String Property in XMPDemonstrates how to open a JPG or TIF image file, access the XMP metadata, and update the value of a string property. (If the string property does not already exist, it is created.)
// This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Chilkat.Xmp xmp = new Chilkat.Xmp(); // Load a JPG or TIF image file. bool success = xmp.LoadAppFile("qa_data/xmp/AJ_123642_1511.tif"); if (success != true) { Debug.WriteLine(xmp.LastErrorText); return; } Debug.WriteLine("Num embedded XMP docs: " + Convert.ToString(xmp.NumEmbedded)); // This example assumes that XMP metadata is already present in the image file. if (xmp.NumEmbedded == 0) { Debug.WriteLine("No XMP metadata already exists.."); return; } // Get the XMP metadata. Chilkat.Xml xml = null; xml = xmp.GetEmbedded(0); // Show the XML: Debug.WriteLine(xml.GetXml()); // Update (overwrite) a string property. xmp.AddSimpleStr(xml,"NumberofTimes","123"); success = xmp.SaveAppFile("qa_output/updated.tif"); if (success != true) { Debug.WriteLine(xmp.LastErrorText); return; } Debug.WriteLine("Success."); |
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