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This document is archived and information here might be outdated. Recommended version. |
EngineNetworkAnalystEnvironment Class (ArcObjects .NET 10.8 SDK)
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This document is archived and information here might be outdated. Recommended version. |
A singleton object representing Engine Network Analyst environment.
The EngineNetworkAnalystEnvironment object is a singleton object (only one instance of the EngineNetworkAnalystEnvironment object is supported per thread) that manages the INetworkLayer objects and the NAWindow.
The EngineNetworkAnalystEnvironment object implements the IEngineNetworkAnalystEnvironment, IEngineNetworkAnalystEnvironmentEvents, and IEngineNetworkAnalystHelper interfaces. The members of these interfaces manage the collection of network layers, the current network layer, solving and getting directions.
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 | Description |
|---|---|
| IConnectionPointContainer (esriDisplay) | |
| IEngineNetworkAnalystEnvironment | Provides access to the network analyst extension. |
| IEngineNetworkAnalystEnvironmentEvents | Provides access to events triggered by the network analysis extension. |
| IEngineNetworkAnalystHelper | Provides access to actions that operate on the network analyst extension. |
| IEngineNetworkAnalystHelper2 | Provides access to actions that operate on the network analyst extension. |
| IExtension (esriSystem) | Provides access to members that define an extension. |
| ISupportErrorInfo (esriSystem) | |
| IToolSelectedLayer (esriSystemUI) | Provides access to members that set and get the current selected layer, which selection commands and tools works on. |