AE设置标注

  基本过程如下，但是需要注意的是labelEngine的Expression属性：依据某字段标注时，一定要加上中括号，即“[属性字段名称]”

View Code 
 1         private void Annotation(IGeoFeatureLayer pGeoFeatLyr, string annoField, ITextSymbol textSyl, bool disLabel)
 2         {
 3             try
 4             {
 5                 IAnnotateLayerPropertiesCollection pAnnoProps = pGeoFeatLyr.AnnotationProperties;
 6                 pAnnoProps.Clear();
 7                 IAnnotateLayerProperties pAnnoLayerProps = null;
 8                 ILineLabelPosition pPosition = null;
 9                 ILineLabelPlacementPriorities pPlacement = null;
10                 IBasicOverposterLayerProperties pBasic = null;
11                 ILabelEngineLayerProperties pLabelEngine = null;
12 
13                 pPosition = new LineLabelPosition();
14                 pPosition.Parallel = false;
15                 pPosition.Perpendicular = true;
16                 pPlacement = new LineLabelPlacementPriorities();
17                 pBasic = new BasicOverposterLayerProperties();
18                 pBasic.FeatureType = esriBasicOverposterFeatureType.esriOverposterPolyline;
19                 pBasic.LineLabelPlacementPriorities = pPlacement;
20                 pBasic.LineLabelPosition = pPosition;
21                 pLabelEngine = new LabelEngineLayerProperties() as ILabelEngineLayerProperties;
22                 pLabelEngine.Symbol = textSyl;
23                 pLabelEngine.BasicOverposterLayerProperties = pBasic;
24 
25                 pLabelEngine.Expression = String.Format("[{0}]", annoField);
26                 pAnnoLayerProps = pLabelEngine as IAnnotateLayerProperties;
27                 pAnnoProps.Add(pAnnoLayerProps);
28                 if (disLabel)
29                     pGeoFeatLyr.DisplayAnnotation = true;
30                 else
31                     pGeoFeatLyr.DisplayAnnotation = false;
32 
33                 m_hook.MapControl.Refresh(esriViewDrawPhase.esriViewBackground, null, null);
34             }
35             catch
36             { }
37         }

 

     

 

posted @ 2013-01-06 13:33  昱众不同  阅读(316)  评论(0)    收藏  举报