AE 加载Shapefile、栅格、CAD、PersonGDB、SDE数据

AE 加载Shapefile、栅格、CAD、PersonGDB、SDE数据ArcEngine加载图层的五个步骤

1.创建一个类工厂

2.使用类工厂创建一个要使用的工作区

3.使用工作区打开并得到图层的dataset

4.把dataset装入到新建的图层实例

5.把图层加载到MapControl控件

1. 加载Shapefile数据

IWorkspaceFactory pWorkspaceFactory;

IFeatureWorkspace pFeatureWorkspace;

IFeatureLayer pFeatureLayer;

//获取当前路径和文件名

OpenFileDialog dlg = new OpenFileDialog();

dlg.Filter = "Shape(*.shp)|*.shp|All Files(*.*)|*.*";

dlg.Title = "Open Shapefile data";

dlg.ShowDialog();

string strFullPath = dlg.FileName;

if (strFullPath == "") return;

int Index = https://www.360docs.net/doc/875518943.html,stIndexOf("//");

string filePath = strFullPath.Substring(0, Index);

string fileName = strFullPath.Substring(Index + 1);

//打开工作空间并添加shp文件

pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();

pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(file Path, 0);

pFeatureLayer = new FeatureLayerClass();

pFeatureLayer.FeatureClass = pFeatureWorkspace.OpenFeatureClass(fileName);

https://www.360docs.net/doc/875518943.html, = pFeatureLayer.FeatureClass.AliasName;

axMapControl1.Map.AddLayer(pFeatureLayer);

axMapControl1.ActiveView.Refresh();

2.加载栅格数据

IWorkspaceFactory pWorkspaceFactory;

IRasterWorkspace pRasterWorkspace;

OpenFileDialog dlg = new OpenFileDialog();

dlg.Filter = "Layer File(*.lyr)|*.jpg;*.bmp;*.tiff";

dlg.Title = "Open Raster Data File";

dlg.ShowDialog();

//获取当前路径和文件名

string strFullPath = dlg.FileName;

if (strFullPath == "") return;

int Index = https://www.360docs.net/doc/875518943.html,stIndexOf("//");

string fileName = strFullPath.Substring(Index + 1);

string filePath = strFullPath.Substring(0, Index);

pWorkspaceFactory = new RasterWorkspaceFactoryClass();

pRasterWorkspace = (IRasterWorkspace)pWorkspaceFactory.OpenFromFile(filePat h, 0);

IRasterDataset pRasterDataset = (IRasterDataset)pRasterWorkspace.OpenRasterD ataset(fileName);

IRasterLayer pRasterLayer = new RasterLayerClass();

pRasterLayer.CreateFromDataset(pRasterDataset);

axMapControl1.Map.AddLayer(pRasterLayer);

axMapControl1.ActiveView.Refresh();

3.加载CAD数据

1 IWorkspaceFactory pWorkspaceFactory;

2 IFeatureWorkspace pFeatureWorkspace;

3 IFeatureLayer pFeatureLayer;

4 IFeatureDataset pFeatureDataset;

5//获取当前路径和文件名

6 OpenFileDialog dlg = new OpenFileDialog();

7 dlg.Filter = "CAD(*.dwg)|*.dwg|All Files(*.*)|*.*";

8 dlg.Title = "Open CAD Data file";

9 dlg.ShowDialog();

10string strFullPath = dlg.FileName;

11if (strFullPath == "") return;

12int Index = https://www.360docs.net/doc/875518943.html,stIndexOf("//");

13string filePath = strFullPath.Substring(0, Index);

14string fileName = strFullPath.Substring(Index + 1);

15//打开CAD数据集

16 pWorkspaceFactory = new CadWorkspaceFactoryClass();

17 pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(fil ePath, 0);

18//打开一个要素集

19 pFeatureDataset = pFeatureWorkspace.OpenFeatureDataset(fileName);

20//IFeaturClassContainer可以管理IFeatureDataset中的每个要素类

21 IFeatureClassContainer pFeatClassContainer = (IFeatureClassContainer)pFeatur eDataset;

22//对CAD文件中的要素进行遍历处理

23for (int i = 0; i < pFeatClassContainer.ClassCount - 1; i++)

24 {

25 IFeatureClass pFeatClass = pFeatClassContainer.get_Class(i);

26if (pFeatClass.FeatureType == esriFeatureType.esriFTCoverageAnnotation)

27//如果是注记，则添加注记层

28 pFeatureLayer = new CadAnnotationLayerClass();

29else//如果是点、线、面，则添加要素层

30 {

31 pFeatureLayer = new FeatureLayerClass();

32 https://www.360docs.net/doc/875518943.html, = pFeatClass.AliasName;

33 pFeatureLayer.FeatureClass = pFeatClass;

34 axMapControl1.Map.AddLayer(pFeatureLayer);

35 axMapControl1.ActiveView.Refresh();

36 }

37 }

4.加载PersonGeodatabase数据

1 IWorkspaceFactory pAccessWorkspaceFactory;

2 IFeatureWorkspace pFeatureWorkspace;

3 IFeatureLayer pFeatureLayer;

4 IFeatureDataset pFeatureDataset;

5

6//获取当前路径和文件名

7 OpenFileDialog dlg = new OpenFileDialog();

8 dlg.Filter = "Personal Geodatabase(*.mdb)|*.mdb|All Files(*.*)|*.*";

9 dlg.Title = "Open PersonGeodatabase file";

10 dlg.ShowDialog();

11string strFullPath = dlg.FileName;

12if (strFullPath == "") return;

13

14//打开personGeodatabase,并添加图层

15 pAccessWorkspaceFactory = new AccessWorkspaceFactoryClass();

16//打开工作空间并遍历数据集

17 IWorkspace pWorkspace = pAccessWorkspaceFactory.OpenFromFile(strFullPat h, 0);

18 IEnumDataset pEnumDataset = pWorkspace.get_Datasets(ESRI.ArcGIS.Geodat abase.esriDatasetType.esriDTAny);

19 pEnumDataset.Reset();

20 IDataset pDataset = pEnumDataset.Next();

21//如果数据集是IFeatureDataset,则遍历它下面的子类

22if (pDataset is IFeatureDataset)

23 {

24 pFeatureWorkspace = (IFeatureWorkspace)pAccessWorkspaceFactory.OpenF romFile(strFullPath, 0);

25 pFeatureDataset = pFeatureWorkspace.OpenFeatureDataset(https://www.360docs.net/doc/875518943.html,);

26 IEnumDataset pEnumDataset1 = pFeatureDataset.Subsets;

27 pEnumDataset1.Reset();

28 IDataset pDataset1 = pEnumDataset1.Next();

29//如果子类是FeatureClass，则添加到axMapControl1中

30if (pDataset1 is IFeatureClass)

31 {

32 pFeatureLayer = new FeatureLayerClass();

33 pFeatureLayer.FeatureClass = pFeatureWorkspace.OpenFeatureClass(pDat https://www.360docs.net/doc/875518943.html,);

34 https://www.360docs.net/doc/875518943.html, = pFeatureLayer.FeatureClass.AliasName;

35 axMapControl1.Map.AddLayer(pFeatureLayer);

36 axMapControl1.ActiveView.Refresh();

37 }

38else

39 {

40 MessageBox.Show("No FeatureLayer!");

41 }

42 }

43else

44 {

45 pFeatureWorkspace = (IFeatureWorkspace)pWorkspace;

46 pFeatureLayer = new FeatureLayerClass();

47 pFeatureLayer.FeatureClass = pFeatureWorkspace.OpenFeatureClass("图层名");

48 https://www.360docs.net/doc/875518943.html, = pFeatureLayer.FeatureClass.AliasName;

49 axMapControl1.Map.AddLayer(pFeatureLayer);

50 axMapControl1.ActiveView.Refresh();

51 }

5.加载SDE数据库数据

1public ESRI.ArcGIS.Geodatabase.IWorkspace arcSDEWorkspaceOpen(String serve r, String instance, String user, String password, String database, String version)

2 {

3try

4 {

5// Create and populate the property set

6 ESRI.ArcGIS.esriSystem.IPropertySet propertySet = new ESRI.ArcGIS.esriSyst em.PropertySetClass();

7 propertySet.SetProperty("SERVER", server);

8 propertySet.SetProperty("INSTANCE", instance);

9 propertySet.SetProperty("DATABASE", database);

10 propertySet.SetProperty("USER", user);

11 propertySet.SetProperty("PASSWORD", password);

12 propertySet.SetProperty("VERSION", version);

13

14 ESRI.ArcGIS.Geodatabase.IWorkspaceFactory2 workspaceFactory;

15 workspaceFactory = (ESRI.ArcGIS.Geodatabase.IWorkspaceFactory2)new Sd eWorkspaceFactoryClass();

16return workspaceFactory.Open(propertySet, 0);

17 }

18catch (Exception e)

19 {

20throw new Exception(String.Format("arcSDEWorkspaceOpen: {0}", e.Messag e), e);

21 }

22 }

23

24 IWorkspace pWorkspace = arcSDEWorkspaceOpen("计算机名", "5151", "数据库用户", "密码", "", "sde.DEFAULT");

25

26 IFeatureWorkspace pFeattureWS = (IFeatureWorkspace)pWorkspace;

27 IFeatureClass pFeatureClass = pFeattureWS.OpenFeatureClass("图层名");

28 IFeatureLayer pFeatureLayer = new FeatureLayerClass();

29 pFeatureLayer.FeatureClass = pFeatureClass;

30

31 axMapControl1.AddLayer(pFeatureLayer);

32 axMapControl1.Refresh();