网络数据集NetWork Dataset(INetworkDataset)的三种获取方式

从geodatabase feature dataset（fds）中获取网络数据集

IFeatureDatasetExtensionContainer fdsExtCont = fds as IFeatureDatasetExtensionContainer;
IFeatureDatasetExtension fdsExt = fdsExtCont.FindExtension(esriDTNetworkDataset);
IDatasetContainer2 dsCont = fdsExt as IDatasetContainer2;                   
IDataset dataset = dsCont.DatasetByName(esriDTNetworkDataset, "Street_ND");
INetworkDataset networkDataset = dataset as INetworkDataset;

 

从shapefile workspace (de>shpWSde>)中获取网络数据集

 IWorkspaceFactory workspaceFactory = new ShapefileWorkspaceFactoryClass();
 IFeatureWorkspace featureWorkspace = workspaceFactory.OpenFromFile(SHAPE_WORKSPACE, 0) as IFeatureWorkspace;
IWorkspaceExtensionManager wsExtMgr = shpWS as IWorkspaceExtensionManager;
UID myUID = new UIDClass();
myUID.Value= "esriGeoDatabase.NetworkDatasetWorkspaceExtension";
IWorkspaceExtension wsExt = wsExtMgr.FindExtension(myUID);  
IDatasetContainer2 dsCont = wsExt as IDatasetContainer2;
IDataset dataset = dsCont.DatasetByName(esriDTNetworkDataset, "Street_ND");
INetworkDataset networkDataset = dataset as INetworkDataset;

从SDC workspace (de>sdcWSde>)中获取网络数据集

IWorkspaceExtensionManager wsExtMgr = sdcWS as IWorkspaceExtensionManager;UID myUID = new UIDClass();
myUID.Value = "esriGeoDatabase.NetworkDatasetWorkspaceExtension";
IWorkspaceExtension wsExt = wsExtMgr.FindExtension(myUID);
IDatasetContainer2 dsCont = wsExt as IDatasetContainer2;
IDataset dataset = dsCont.DatasetByName(esriDTNetworkDataset, "Street_ND");
INetworkDataset networkDataset = dataset as INetworkDataset;