public static void SetReferenceScale(IAnnotationLayer annotationLayer, double scale)
{
IFeatureLayer featureLayer = annotationLayer as IFeatureLayer;
IFeatureClass featureClass = featureLayer.FeatureClass;
IAnnoClass annoClass = featureClass.Extension as IAnnoClass;
IAnnoClassAdmin3 annoClassAdmin3 = annoClass as IAnnoClassAdmin3;
annoClassAdmin3.ReferenceScale = scale;
}
private void ProcessAnnotation(IAnnotationLayer annoLayer)
{
//get unique values
IFeatureLayer featureLayer = annoLayer as IFeatureLayer;
IDataStatistics dataStats = new DataStatisticsClass();
dataStats.Field = "SymbolID";
dataStats.SampleRate = -1; //all records
IQueryFilter queryFilter = new QueryFilterClass();
queryFilter.SubFields = "SymbolID";
dataStats.Cursor = featureLayer.Search(queryFilter, true) as ICursor;
object value = null;
var enumVar = dataStats.UniqueValues;
//now remove items
IFeatureClass featureClass = featureLayer.FeatureClass;
IAnnotationClassExtension annoClassExt = featureClass.Extension as IAnnotationClassExtension;
ISymbolCollection2 symbolCollection = annoClassExt.SymbolCollection as ISymbolCollection2;
ISymbolCollection2 newSymColl = new SymbolCollectionClass();
while (enumVar.MoveNext())
{
value = enumVar.Current;
ISymbolIdentifier2 symbolIdent = null;
symbolCollection.GetSymbolIdentifier(Convert.ToInt32(value), out symbolIdent);
newSymColl.set_Symbol(symbolIdent.ID, symbolIdent.Symbol);
newSymColl.RenameSymbol(symbolIdent.ID, symbolIdent.Name);
}
//update class extension with the new collection
IAnnoClassAdmin3 annoClassAdmin = annoClassExt as IAnnoClassAdmin3;
annoClassAdmin.SymbolCollection = (ISymbolCollection)newSymColl;
annoClassAdmin.UpdateProperties();
}