public event EventHandler<CodecsEnumGeoKeysEventArgs> GeoKeyFound
synchronized public void addGeoKeyFoundListener(CodecsGeoKeyFoundListener listener)
synchronized public void removeGeoKeyFoundListener(CodecsGeoKeyFoundListener listener)
public:
event EventHandler<CodecsEnumGeoKeysEventArgs^>^ GeoKeyFound
def GeoKeyFound(sender,e): # sender: RasterCodecs e: CodecsEnumGeoKeysEventArgs
The event handler receives an argument of type CodecsEnumGeoKeysEventArgs containing data related to this event. The following CodecsEnumGeoKeysEventArgs properties provide information specific to this event.
Property | Description |
---|---|
Buffer | Gets a pointer to the unmanaged memory containing the GeoKey data. |
This event will fire for each GeoKey found in the file as a result of calling EnumGeoKeys.
Do not attempt to use DeleteTag to delete tags from inside this event. If you want to delete tags that you enumerate, use this event to add the tags to a list. Upon returning from EnumGeoKeys, you can delete all the tags from the list.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Svg;
IList<RasterTagMetadata> myGeoKeys;
void EnumGeoKeysExample(string srcFileName, string destFileName)
{
RasterCodecs codecs = new RasterCodecs();
geoKeySrcFileName = srcFileName;
myGeoKeys = new List<RasterTagMetadata>();
codecs.GeoKeyFound += new EventHandler<CodecsEnumGeoKeysEventArgs>(codecs_GeyKeyFound);
codecs.EnumGeoKeys(srcFileName, 1);
codecs.GeoKeyFound -= new EventHandler<CodecsEnumGeoKeysEventArgs>(codecs_GeyKeyFound);
// We read all the tags now, save them to the file
Debug.WriteLine("{0} GeoKeys read, saving them to the destination file", myGeoKeys.Count);
codecs.WriteGeoKeys(destFileName, 1, myGeoKeys);
// Clean up
codecs.Dispose();
}
void codecs_GeyKeyFound(object sender, CodecsEnumGeoKeysEventArgs e)
{
Debug.WriteLine("GeoKey: Id={0}, Count={1}, Type={2}, Data Length={3}, Data=, Cancel={4}", e.Id, e.Count, e.MetadataType, e.Buffer.Length, e.Cancel);
// Load this GeoKey
RasterCodecs codecs = sender as RasterCodecs;
RasterTagMetadata geoKey = codecs.ReadGeoKey(geoKeySrcFileName, 1, e.Id);
byte[] data = geoKey.GetData();
for (int i = 0; i < data.Length; i++)
Debug.WriteLine("{0:X} ", data[i].ToString());
// Add it to our collection
myGeoKeys.Add(geoKey);
e.ToRasterTagMetadata();
}
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