/// <summary>
/// Creates an ExtendedData KML element from a graphic's attributes.
/// </summary>
/// <param name="attributes">A dictionary of graphic attributes</param>
/// <returns></returns>
public static ExtendedData ToExtendedData(Dictionary <string, object> attributes)
{
var datas = from kvp in attributes
where !_geometryInNameRe.IsMatch(kvp.Key)
select new Data
{
Name = kvp.Key,
//Value = kvp.Value?.ToString() // VS 2015
Value = kvp.Value != null?kvp.Value.ToString() : null
};
var xData = new ExtendedData();
foreach (var data in datas)
{
xData.AddData(data);
}
return(xData);
}
/// <summary>
/// converte la feature class in kml. Se non sono presenti le coordinate il dato non viene inserito
/// </summary>
/// <param name="sourceWorkspace">workspace con la feature class</param>
/// <param name="outputName">nome della feature class e del csv di output</param>
/// <param name="targetPath">percorso dove salvare il file di output</param>
/// <param name="delimitator">delimitatore utilizzato nel csv</param>
private void ConvertFeatureClassPointToKml(IWorkspace sourceWorkspace, string outputName, string targetPath)
{
IFeatureCursor featureCursor = null;
try
{
IFeatureWorkspace featureWorkspace = sourceWorkspace as IFeatureWorkspace;
IFeatureClass featureClass = featureWorkspace.OpenFeatureClass(outputName);
if (featureClass.ShapeType != esriGeometryType.esriGeometryPoint)
{
throw new Exception($"Per esportare in {Enum.GetName(typeof(FileExtension), FileExtension.kmz)} occorre una feature class di tipo {Enum.GetName(typeof(esriGeometryType), esriGeometryType.esriGeometryPoint)}!");
}
featureCursor = featureClass.Search(null, true);
var folder = new Folder();
folder.Id = outputName;
folder.Name = outputName;
Dictionary <int, string> fields = new Dictionary <int, string>();
IField field = null;
for (int i = 0; i < featureCursor.Fields.FieldCount; i++)
{
field = featureCursor.Fields.Field[i];
if ((field.Type == esriFieldType.esriFieldTypeBlob) || (field.Type == esriFieldType.esriFieldTypeGeometry) ||
(field.Type == esriFieldType.esriFieldTypeGlobalID) || (field.Type == esriFieldType.esriFieldTypeGUID) ||
(field.Type == esriFieldType.esriFieldTypeRaster) || (field.Type == esriFieldType.esriFieldTypeXML))
{
continue;
}
fields.Add(i, field.Name);
}
IFeature feature = null;
Placemark placemark = null;
Vector vector = null;
ExtendedData extendedData = null;
while ((feature = featureCursor.NextFeature()) != null)
{
if ((feature.ShapeCopy == null) || (feature.ShapeCopy.IsEmpty))
{
continue;
}
IPoint p = feature.ShapeCopy as IPoint;
if (p.SpatialReference.FactoryCode != Helper.SpatialReferenceWGS84.FactoryCode)
{
p.Project(Helper.SpatialReferenceWGS84);
}
vector = new Vector(p.Y, p.X);
placemark = new Placemark();
placemark.Id = feature.OID.ToString();
placemark.Name = feature.OID.ToString();
extendedData = new ExtendedData();
foreach (int i in fields.Keys)
{
Data data = new Data();
data.DisplayName = fields[i];
data.Name = fields[i];
data.Value = feature.get_Value(i).ToString();
extendedData.AddData(data);
}
placemark.ExtendedData = extendedData;
placemark.Geometry = new SharpKml.Dom.Point {
Coordinate = vector
};
folder.AddFeature(placemark);
}
Kml kml = new Kml();
kml.AddNamespacePrefix(KmlNamespaces.GX22Prefix, KmlNamespaces.GX22Namespace);
kml.Feature = folder;
KmlFile kmlfile = KmlFile.Create(kml, false);
using (var stream = File.OpenWrite(System.IO.Path.Combine(targetPath, System.IO.Path.ChangeExtension(outputName, Enum.GetName(typeof(FileExtension), FileExtension.kmz)))))
{
kmlfile.Save(stream);
}
}
catch
{
throw;
}
finally
{
if (featureCursor != null)
{
Marshal.FinalReleaseComObject(featureCursor);
}
}
}