矢量图层标注

public void Annotation(IGeoFeatureLayer pGeoFeatLyr, IMap pMap, string annoField)

{

IAnnotateMap pAnnoMap;

pAnnoMap = new MaplexAnnotateMapClass();

pMap.AnnotationEngine = pAnnoMap;

IGeoFeatureLayer pGeoFeatLayer;

pGeoFeatLayer = pGeoFeatLyr;

IAnnotateLayerPropertiesCollection pAnnoProps;

pAnnoProps = pGeoFeatLyr.AnnotationProperties;

pAnnoProps.Clear();

ILabelEngineLayerProperties2 pLabelEngine2 = new MaplexLabelEngineLayerPropertiesClass();

pLabelEngine2.Expression = "[" + annoField + "]";

IMaplexOverposterLayerProperties pMaplexPro = new MaplexOverposterLayerPropertiesClass();

pMaplexPro.FeatureType = esriBasicOverposterFeatureType.esriOverposterPolygon;

pMaplexPro.PolygonPlacementMethod = esriMaplexPolygonPlacementMethod.esriMaplexHorizontalInPolygon;

pMaplexPro.CanPlaceLabelOutsidePolygon = false;

pMaplexPro.CanRemoveOverlappingLabel = false;

pMaplexPro.RepeatLabel = false;

pLabelEngine2.OverposterLayerProperties = pMaplexPro as IOverposterLayerProperties;

IMapOverposter pMapPos = axMapControl1.Map as IMapOverposter;

IOverposterProperties pOP = pMapPos.OverposterProperties;

IMaplexOverposterProperties pMaplexOP = pOP as IMaplexOverposterProperties;

pMaplexOP.LabelLargestPolygon = false;

pAnnoProps.Add(pLabelEngine2 as IAnnotateLayerProperties);

pGeoFeatLyr.DisplayAnnotation = true;

}