I fount it!
String sdcPath ="C:/ARCGIS/MAp and Data/streetmap_na/data";
IWorkspace theSDCWorkspace = openSdcWorkspace(sdcPath);
String networkDatasetName="streets.sdc";
INetworkDataset nwDataset = openSDCNetworkDataset(theSDCWorkspace,networkDatasetName);
public INetworkDataset openSDCNetworkDataset(IWorkspace networkDatasetWorkspace,
String networkDatasetName)throws AutomationException,
IOException{
// Shapefile and SDC network datasets will not have a feature dataset,
// so pass in the featureDatasetName as an empty string for those types.
if (networkDatasetWorkspace == null || networkDatasetName == "")
return null;
// Get the IDatasetContainer based on the workspace type.
IDatasetContainer3 datasetContainer3 = null;
// Example: FileSystemWorkspaces include SDC and shapefile.
IWorkspaceExtensionManager workspaceExtensionManager = (IWorkspaceExtensionManager)networkDatasetWorkspace;
UID networkID = new UID();
networkID.setValue("esriGeoDatabase.NetworkDatasetWorkspaceExtension");
IWorkspaceExtension workspaceExtension = workspaceExtensionManager.findExtension(networkID);
datasetContainer3 = new IDatasetContainer3Proxy(workspaceExtension);
// Example: LocalDatabaseWorkspaces can be personal geodatabases and file geodatabases.
// An example RemoteDatabaseWorkspace is an ArcSDE geodatabase.
// Both LocalDatabaseWorkspace and RemoteDatabaseWorkspace network datasets are
// opened the same way.
if (datasetContainer3 == null)
return null;
// Use the container to open the network dataset.
IDataset dataset = datasetContainer3.getDatasetByName(esriDatasetType.esriDTNetworkDataset, networkDatasetName);
INetworkDataset networkDataset = new INetworkDatasetProxy(dataset);
// Some Network Analyst methods, such as INASolver.Bind, require an IDENetworkDataset.
// You can access the DataElement from the network dataset via the IDatasetComponent interface
IDatasetComponent datasetComponent = new IDatasetComponentProxy(networkDataset);
IDENetworkDataset deNetworkDataset = (IDENetworkDataset) datasetComponent.getDataElement();
return networkDataset;
}
