You have to get the section box and rotate that. Here is a C# macro that rotates a section called "MySection" as an example.
public void RotateSectionView()
{
// rotate the view section with the name "MySection":
string name = "MySection";
UIDocument uidoc = this.ActiveUIDocument;
Document doc = this.ActiveUIDocument.Document;
View activeView = doc.ActiveView;
// find the view named "MySection" with a filtered element collector:
FilteredElementCollector collector = new FilteredElementCollector(doc);
collector.WherePasses(new ElementCategoryFilter(BuiltInCategory.OST_Views));
var viewElements = from element in collector
where element.Name == name
select element;
// show error message if the view was not found
List<Autodesk.Revit.DB.Element> sectionViews = viewElements.ToList<Autodesk.Revit.DB.Element>();
if (sectionViews.Count == 0)
{
TaskDialog.Show("Message", "Cannot find the view name " + name + "\n The operation will be canceled.");
throw new Exception("Error - view not found");
}
// get the element id of the view section
ElementId sectionId = sectionViews[0].Id;
using (Transaction trans = new Transaction(doc, "rotate"))
{
trans.Start();
XYZ p1 = new XYZ(0,0,0);
XYZ p2 = new XYZ(1,0,0);
Line axis = Line.CreateBound(p1, p2);
// the lines below rotate the named view
collector = new FilteredElementCollector(doc).WherePasses(new ElementParameterFilter
(new FilterElementIdRule(new ParameterValueProvider(new ElementId(Convert.ToInt32(BuiltInParameter.ID_PARAM))),
new FilterNumericEquals(), sectionId)));
ElementId sectionboxId = collector.ToElementIds().Except(new List<ElementId>(new ElementId[] { sectionId })).FirstOrDefault();
ElementTransformUtils.RotateElement(doc, sectionboxId, axis, Math.PI/2);
uidoc.RefreshActiveView ();
//TaskDialog.Show("Revit","Rotated");
trans.Commit();
}
}
Normally, for rotating a section in a plan view, p2 would be (0,0,1) to give a rotation axis pointing in the Z direction (up out of the plan). To rotate in a elevation view, I used an elevation looking right, and then drew a vertical section looking left. Doing this, and setting p2 as (1,0,0) as shown rotates the section to look up. Rotating by 3*(Math.Pi/2) should rotate to look down.
You will probably have to do some additional work to find the right vector for every case, since you may be looking at different directions in different elevations.
You may also have to do some more work to set the center of rotation.
