ArcGIS的 Engine基础实战.ppt

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2018-02-18 发布于浙江
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ArcGIS的 Engine基础实战.ppt

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ArcGIS的 Engine基础实战

练习DEMO 打开数据源打开gdb IWorkspaceFactory workspaceFactory = new FileGDBWorkspaceFactoryClass(); workspace = workspaceFactory.OpenFromFile(“D:/data.gdb”, 0); IFeatureWorkspace pFeatWorkspace = workspace as IFeatureWorkspace;IFeatureClass pFeatureClass = pFeatWorkspace.OpenFeatureClass(Water) 打开sde IPropertySet propertySet = new PropertySetClass(); propertySet.SetProperty(SERVER, server); propertySet.SetProperty(INSTANCE, instance); propertySet.SetProperty(DATABASE, database); propertySet.SetProperty(USER, user); propertySet.SetProperty(PASSWORD, password); propertySet.SetProperty(VERSION, version); IWorkspaceFactory workspaceFactory = new SdeWorkspaceFactoryClass(); workspace = workspaceFactory.Open(propertySet, 0); 属性查询 ILayer layer = axMapControl1.get_Layer(0); IFeatureLayer featureLayer = layer as IFeatureLayer; //获取featureLayer的featureClass IFeatureClass featureClass = featureLayer.FeatureClass; IQueryFilter queryFilter = new QueryFilterClass(); IFeatureCursor featureCusor; string filter = DLMC = 旱地; queryFilter.WhereClause = filter; featureCusor = featureClass.Search(queryFilter, true); if (featureCusor != null) { IFeature fea = featureCusor.NextFeature(); while(fea != null) { if (featureCusor == null) { return; } IGeometry geom = fea.Shape; IPolygon polygon = geom as IPolygon; Common.renderPolygon(polygon, axMapControl1.ActiveView, axMapControl1.Map); fea = featureCusor.NextFeature(); } } 查询所有旱地绘制多边形 IFillShapeElement pPolygonElement; ISimpleFillSymbol pSimpleFil