Place the import at the same orientation as the view that was passed into the import method.
This option can only be used when not importing into a single view.(i.e. ThisViewOnly is set to false)
Namespace:
Autodesk.Revit.DB
Assembly:
RevitAPI
(in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
Since:
2013