|  External  | 
 Returns an instance of an object that represents the external service with the given Id. 
 Namespace: Autodesk.Revit.DB.ExternalService
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
 Syntax
 Syntax  Parameters
- serviceId ExternalServiceId
- Id of the service.
Return Value
ExternalServiceThe instance of the service or NULL if it cannot be found.
 Exceptions
 Exceptions  | Exception | Condition | 
|---|---|
| ArgumentNullException | A non-optional argument was null | 
 Remarks
 Remarks   The returned instance is either of type SingleServerService or MultiServerService. Users should cast the returned object to one of the classes if they need access to active servers. 
  See Also
 See Also