public void UpdateXMPData()
{
try
{
//ExStart:UpdateXMP
// path to the modified file
string filePath = "Images/Jpeg/sample.jpg";
// get xmp wrapper
XmpPacketWrapper xmpWrapper = MetadataUtility.ExtractXmpPackage(filePath);
// if wrapper is null
if (xmpWrapper == null)
{
// create it
xmpWrapper = new XmpPacketWrapper();
}
// create package
XmpPackage addingSchema = new XmpPackage("rs", "http://www.metadataworkinggroup.com/schemas/regions/");
// set date property
addingSchema.AddValue("rs:createdDate", DateTime.UtcNow);
// set string property
addingSchema.AddValue("rs:File", "File name");
//initialze unordered xmp array
XmpArray managersArray = new XmpArray(XmpArrayType.UNORDERED);
managersArray.AddItem("Joe Doe");
managersArray.AddItem("Adam White");
// set array property
addingSchema.SetArray("rs:managers", managersArray);
// initialize xmp language alternative
LangAlt availableDays = new LangAlt();
// add first value for 'en-us' language
availableDays.AddLanguage("en-us", "Tue");
// add second value for 'en-us' languge
availableDays.AddLanguage("en-us", "Fri");
// set LangAlt property
addingSchema.SetLangAlt("rs:days", availableDays);
// update xmp wrapper with new schema
xmpWrapper.AddPackage(addingSchema);
// create XmpMetadata with updated wrapper
XmpMetadata xmpMetadata = new XmpMetadata();
xmpMetadata.XmpPacket = xmpWrapper;
// update XMP
MetadataUtility.UpdateMetadata(filePath, xmpMetadata);
//ExEnd:UpdateXMP
}
catch (Exception exp)
{
}
}
public void CreateDerivedXMPTypes()
{
//ExStart:CreateXMPGuid
// init new C# struct Guid
Guid guid = Guid.NewGuid();
// create xmp guid using C# struct
XmpGuid xmpGuid = new XmpGuid(guid);
// create xmp guid using it's string representation
XmpGuid xmpGuid2 = new XmpGuid(guid.ToString());
//ExEnd:CreateXMPGuid
//ExStart:CreateRational
int numerator = 1;
int denominator = 10;
// create xmp rational
Rational rational = new Rational(numerator, denominator);
// float value should be 0.1
float value = rational.FloatValue;
//ExEnd:CreateRational
//ExStart:CreateLanguageAlternative
// init LangAlt with default value
LangAlt langAlt = new LangAlt("XMP - Extensible Metadata Platform");
// add value for en-us language
langAlt.AddLanguage("en-us", "XMP - Extensible Metadata Platform");
// add value for French language
langAlt.AddLanguage("fr", "XMP - Une Platforme Extensible pour les Métadonnées");
//ExEnd:CreateLanguageAlternative
}