Generates driving directions for network analysis results.
Product Availability
Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server. Requires Network Analyst Extension.
Extended Error Information
Use the ISupportErrorInfo method InterfaceSupportsErrorInfo to determine if the object supports extended error information. If the object supports extended error info, VC++ developers should use the OLE/COM IErrorInfo interface to access the ErrorInfo object. Visual Basic developers should use the global error object Err to retrieve this extended error information.
Interfaces
| Interfaces | Description |
|---|---|
| INAAgent | Provides access to properties/methods common to all network analysis agents. |
| INAStreetDirectionsAgent | Provides access to the Directions Agent. |
| INAStreetDirectionsAgent2 | Provides access to the Directions Agent. |
| INAStreetDirectionsAgent3 | Provides access to the INAStreetDirectionsAgent3 Interface. |
| IPersist | Defines the single method GetClassID, which is designed to supply the CLSID of an object that can be stored persistently in the system. IPersist is the base interface for three other interfaces: IPersistStorage, IPersistStream, and IPersistFile. |
| IPersistStream (esriSystem) | |
| ISupportErrorInfo | Indicates whether a specific interface can return Automation error objects. |
Remarks
The NAStreetDirectionsAgent object generates driving directions on a route or multiple routes.
You get the NAStreetDirectionsAgent from the NAContext's list of agents using the name "StreetDirectionsAgent". For example:
Set pStreetAgent = NAContext.Agents.ItemByName("StreetDirectionsAgent")