Arc Engine下数据的加载处理

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 = strFullPath.LastIndexOf("\\");
            string filePath = strFullPath.Substring(, Index);
            string fileName = strFullPath.Substring(Index + );

            //打开工作空间并添加shp文件
            pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();
            pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(filePath, );
            pFeatureLayer = new FeatureLayerClass();

            pFeatureLayer.FeatureClass = pFeatureWorkspace.OpenFeatureClass(fileName);
            pFeatureLayer.Name = 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 = strFullPath.LastIndexOf("\\");
            string fileName = strFullPath.Substring(Index + );
            string filePath = strFullPath.Substring(, Index);

            pWorkspaceFactory = new RasterWorkspaceFactoryClass();
            pRasterWorkspace = (IRasterWorkspace)pWorkspaceFactory.OpenFromFile(filePath, );
            IRasterDataset pRasterDataset = (IRasterDataset)pRasterWorkspace.OpenRasterDataset(fileName);
            IRasterLayer pRasterLayer = new RasterLayerClass();
            pRasterLayer.CreateFromDataset(pRasterDataset);
            axMapControl1.Map.AddLayer(pRasterLayer);
            axMapControl1.ActiveView.Refresh();

3.加载CAD数据

            IWorkspaceFactory pWorkspaceFactory;
             IFeatureWorkspace pFeatureWorkspace;
             IFeatureLayer pFeatureLayer;
             IFeatureDataset pFeatureDataset;
             //获取当前路径和文件名
             OpenFileDialog dlg = new OpenFileDialog();
             dlg.Filter = "CAD(*.dwg)|*.dwg|All Files(*.*)|*.*";
             dlg.Title = "Open CAD Data file";
             dlg.ShowDialog();
            string strFullPath = dlg.FileName;
            if (strFullPath == "") return;
            int Index = strFullPath.LastIndexOf("\\");
            string filePath = strFullPath.Substring(, Index);
            string fileName = strFullPath.Substring(Index + );
            //打开CAD数据集
            pWorkspaceFactory = new CadWorkspaceFactoryClass();
            pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(filePath, );
            //打开一个要素集
            pFeatureDataset = pFeatureWorkspace.OpenFeatureDataset(fileName);
            //IFeaturClassContainer可以管理IFeatureDataset中的每个要素类
            IFeatureClassContainer pFeatClassContainer = (IFeatureClassContainer)pFeatureDataset;
            //对CAD文件中的要素进行遍历处理
            for (int i = ; i < pFeatClassContainer.ClassCount - ; i++)
            {
                IFeatureClass pFeatClass = pFeatClassContainer.get_Class(i);
                if (pFeatClass.FeatureType == esriFeatureType.esriFTCoverageAnnotation)
                    //如果是注记，则添加注记层
                    pFeatureLayer = new CadAnnotationLayerClass();
                else//如果是点、线、面，则添加要素层
                {
                    pFeatureLayer = new FeatureLayerClass();
                    pFeatureLayer.Name = pFeatClass.AliasName;
                    pFeatureLayer.FeatureClass = pFeatClass;
                    axMapControl1.Map.AddLayer(pFeatureLayer);
                    axMapControl1.ActiveView.Refresh();
                }
            }

4.加载PersonGeodatabase数据

            IWorkspaceFactory pAccessWorkspaceFactory;
             IFeatureWorkspace pFeatureWorkspace;
             IFeatureLayer pFeatureLayer;
             IFeatureDataset pFeatureDataset;

             //获取当前路径和文件名
             OpenFileDialog dlg = new OpenFileDialog();
             dlg.Filter = "Personal Geodatabase(*.mdb)|*.mdb|All Files(*.*)|*.*";
             dlg.Title = "Open PersonGeodatabase file";
            dlg.ShowDialog();
            string strFullPath = dlg.FileName;
            if (strFullPath == "") return;

            //打开personGeodatabase,并添加图层
            pAccessWorkspaceFactory = new AccessWorkspaceFactoryClass();
            //打开工作空间并遍历数据集
            IWorkspace pWorkspace = pAccessWorkspaceFactory.OpenFromFile(strFullPath, );
            IEnumDataset pEnumDataset = pWorkspace.get_Datasets(ESRI.ArcGIS.Geodatabase.esriDatasetType.esriDTAny);
            pEnumDataset.Reset();
            IDataset pDataset = pEnumDataset.Next();
            //如果数据集是IFeatureDataset,则遍历它下面的子类
            if (pDataset is IFeatureDataset)
            {
                pFeatureWorkspace = (IFeatureWorkspace)pAccessWorkspaceFactory.OpenFromFile(strFullPath, );
                pFeatureDataset = pFeatureWorkspace.OpenFeatureDataset(pDataset.Name);
                IEnumDataset pEnumDataset1 = pFeatureDataset.Subsets;
                pEnumDataset1.Reset();
                IDataset pDataset1 = pEnumDataset1.Next();
                //如果子类是FeatureClass，则添加到axMapControl1中
                if (pDataset1 is IFeatureClass)
                {
                    pFeatureLayer = new FeatureLayerClass();
                    pFeatureLayer.FeatureClass = pFeatureWorkspace.OpenFeatureClass(pDataset1.Name);
                    pFeatureLayer.Name = pFeatureLayer.FeatureClass.AliasName;
                    axMapControl1.Map.AddLayer(pFeatureLayer);
                    axMapControl1.ActiveView.Refresh();
                }
                else
                {
                    MessageBox.Show("No FeatureLayer!");
                }
            }
            else
            {
                pFeatureWorkspace = (IFeatureWorkspace)pWorkspace;
                pFeatureLayer = new FeatureLayerClass();
                pFeatureLayer.FeatureClass = pFeatureWorkspace.OpenFeatureClass("图层名");
                pFeatureLayer.Name = pFeatureLayer.FeatureClass.AliasName;
                axMapControl1.Map.AddLayer(pFeatureLayer);
                axMapControl1.ActiveView.Refresh();
            }

5.加载SDE数据库数据

        public ESRI.ArcGIS.Geodatabase.IWorkspace arcSDEWorkspaceOpen(String server, String instance, String user, String password, String database, String version)
         {
             try
             {
                 // Create and populate the property set
                 ESRI.ArcGIS.esriSystem.IPropertySet propertySet = new ESRI.ArcGIS.esriSystem.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);

                ESRI.ArcGIS.Geodatabase.IWorkspaceFactory2 workspaceFactory;
                workspaceFactory = (ESRI.ArcGIS.Geodatabase.IWorkspaceFactory2)new SdeWorkspaceFactoryClass();
                return workspaceFactory.Open(propertySet, );
            }
            catch (Exception e)
            {
                throw new Exception(String.Format("arcSDEWorkspaceOpen: {0}", e.Message), e);
            }
        }

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

            IFeatureWorkspace pFeattureWS = (IFeatureWorkspace)pWorkspace;
            IFeatureClass pFeatureClass = pFeattureWS.OpenFeatureClass("图层名");
            IFeatureLayer pFeatureLayer = new FeatureLayerClass();
            pFeatureLayer.FeatureClass = pFeatureClass;

            axMapControl1.AddLayer(pFeatureLayer);
            axMapControl1.Refresh();

6、文件地理数据库加载

　　　　　　　　 　IFeatureWorkspace pFeatureWorkspace;
                IFeatureLayer pFeatureLayer;
              　IFeatureDataset pFeatureDataset;
                string filePath = @"D:\My Documents\ArcGIS\新建文件地理数据库.gdb";
                string filename = "haha";
                //打开personGeodatabase,并添加图层
                IWorkspaceFactory pAccessWorkspaceFactory = new FileGDBWorkspaceFactoryClass();
                //打开工作空间并遍历数据集
                IWorkspace pWorkspace = pAccessWorkspaceFactory.OpenFromFile(filePath, );
                IEnumDataset pEnumDataset = pWorkspace.get_Datasets(ESRI.ArcGIS.Geodatabase.esriDatasetType.esriDTAny);
                pEnumDataset.Reset();
                IDataset pDataset = pEnumDataset.Next();
                //如果数据集是IFeatureDataset,则遍历它下面的子类
                if (pDataset is IFeatureDataset)
                {
                    pFeatureWorkspace = (IFeatureWorkspace)pAccessWorkspaceFactory.OpenFromFile(filePath, );
                    pFeatureDataset = pFeatureWorkspace.OpenFeatureDataset(pDataset.Name);
                    IEnumDataset pEnumDataset1 = pFeatureDataset.Subsets;
                    pEnumDataset1.Reset();
                    IDataset pDataset1 = pEnumDataset1.Next();
                    //如果子类是FeatureClass，则添加到axMapControl1中
                    if (pDataset1 is IFeatureClass)
                    {
                        pFeatureLayer = new FeatureLayerClass();
                        pFeatureLayer.FeatureClass = pFeatureWorkspace.OpenFeatureClass(filename);
                        pFeatureLayer.Name = pFeatureLayer.FeatureClass.AliasName;
                        IRgbColor pRgbColor = new RgbColorClass();
                        pRgbColor.Red = ;
                        pRgbColor.Green = ;
                        pRgbColor.Blue = ;
                        pRgbColor.Transparency = ;
                        ILineSymbol pLineSymbol = new SimpleLineSymbolClass();
                        IFillSymbol pFillSymbol = new SimpleFillSymbolClass();
                        pFillSymbol.Color = pRgbColor;
                        pRgbColor.Transparency = ;
                        pLineSymbol.Color = pRgbColor;
                        pLineSymbol.Width = ;
                        pFillSymbol.Outline = pLineSymbol;
                        ISimpleRenderer pSimpleRender = new SimpleRendererClass();
                        pSimpleRender.Symbol = pFillSymbol as ISymbol;
                        IGeoFeatureLayer pGeoFeatureLayer = pFeatureLayer as IGeoFeatureLayer;
                        pGeoFeatureLayer.Renderer = pSimpleRender as IFeatureRenderer;
                        pFeatureLayer = pGeoFeatureLayer as IFeatureLayer;
                        axMapControl1.Map.AddLayer(pFeatureLayer);
                        axMapControl1.ActiveView.Refresh();
                    }
                 }