ArcGIS Engine中数据的加载 （转）

1.加载Shapefile数据
1 IWorkspaceFactory pWorkspaceFactory;
2 IFeatureWorkspace pFeatureWorkspace;
3 IFeatureLayer pFeatureLayer;
4
5 //获取当前路径和文件名
6 OpenFileDialog dlg = new OpenFileDialog();
7 dlg.Filter = "Shape(*.shp)|*.shp|All Files(*.*)|*.*";
8 dlg.Title = "Open Shapefile data";
9 dlg.ShowDialog();
10 string strFullPath = dlg.FileName;
11 if (strFullPath == "") return;
12 int Index = strFullPath.LastIndexOf("\\");
13 string filePath = strFullPath.Substring(0, Index);
14 string fileName = strFullPath.Substring(Index + 1);
15
16 //打开工作空间并添加shp文件
17 pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();
18 pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(filePath, 0);
19 pFeatureLayer = new FeatureLayerClass();
20
21 pFeatureLayer.FeatureClass = pFeatureWorkspace.OpenFeatureClass(fileName);
22 pFeatureLayer.Name = pFeatureLayer.FeatureClass.AliasName;
23 axMapControl1.Map.AddLayer(pFeatureLayer);
24 axMapControl1.ActiveView.Refresh();

2.加载栅格数据
1 IWorkspaceFactory pWorkspaceFactory;
2 IRasterWorkspace pRasterWorkspace;
3
4 OpenFileDialog dlg = new OpenFileDialog();
5 dlg.Filter = "Layer File(*.lyr)|*.jpg;*.bmp;*.tiff";
6 dlg.Title = "Open Raster Data File";
7 dlg.ShowDialog();
8 //获取当前路径和文件名
9 string strFullPath = dlg.FileName;
10 if (strFullPath == "") return;
11 int Index = strFullPath.LastIndexOf("\\");
12 string fileName = strFullPath.Substring(Index + 1);
13 string filePath = strFullPath.Substring(0, Index);
14
15 pWorkspaceFactory = new RasterWorkspaceFactoryClass();
16 pRasterWorkspace = (IRasterWorkspace)pWorkspaceFactory.OpenFromFile(filePath, 0);
17 IRasterDataset pRasterDataset = (IRasterDataset)pRasterWorkspace.OpenRasterDataset(fileName);
18 IRasterLayer pRasterLayer = new RasterLayerClass();
19 pRasterLayer.CreateFromDataset(pRasterDataset);
20 axMapControl1.Map.AddLayer(pRasterLayer);
21 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();
10 string strFullPath = dlg.FileName;
11 if (strFullPath == "") return;
12 int Index = strFullPath.LastIndexOf("\\");
13 string filePath = strFullPath.Substring(0, Index);
14 string fileName = strFullPath.Substring(Index + 1);
15 //打开CAD数据集
16 pWorkspaceFactory = new CadWorkspaceFactoryClass();
17 pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(filePath, 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)pFeatureDataset;
22 //对CAD文件中的要素进行遍历处理
23 for (int i = 0; i