AE二次开发中，过滤后的图层，实现缩放至图层效果
//featureClass是自己获取的featureClass，也可是sde中获取的。 public void FilterAndZoomToLayer(IFeatureClass featureClass) { IFeatureLayer featureLayer = new FeatureLayerClass(); featureLayer.FeatureClass = featureClass; IFeatureLayerDefinition featureLayerDefinition = featureLayer as IFeatureLayerDefinition; //获取符合条件的图层要素 featureLayerDefinition.DefinitionExpression = "XZQDM like '" + xz_xzqdm + "%'"; IFeatureLayer newFeatureLayer = featureLayerDefinition.CreateSelectionLayer(featureClass.AliasName, false, null, featureLayerDefinition.DefinitionExpression); ILayer newLayer = newFeatureLayer as ILayer; mcView.AddLayer(newLayer); //实现过滤后的图层，缩放到图层 IEnvelope envelope = new EnvelopeClass(); ILayer layer = mcView.get_Layer(0); IFeatureLayer featureLayer = layer as IFeatureLayer; IQueryFilter queryFilter = new QueryFilterClass(); queryFilter.WhereClause = ""; IFeatureCursor featureCursor = featureLayer.FeatureClass.Search(queryFilter, true); IFeature feature = featureCursor.NextFeature(); while (feature != null) { IGeometry geometry = feature.Shape; IEnvelope featureExtent = geometry.Envelope; envelope.Union(featureExtent); System.Runtime.InteropServices.Marshal.ReleaseComObject(feature); feature = featureCursor.NextFeature(); } mcView.ActiveView.FullExtent = envelope; }