public Result Execute(
ExternalCommandData commandData,
ref string message,
ElementSet elements)
{
UIApplication uiapp = commandData.Application;
UIDocument uidoc = uiapp.ActiveUIDocument;
Application app = uiapp.Application;
Document doc = uidoc.Document;
Reference r = uidoc.Selection.PickObject(
ObjectType.Element );
// 'Autodesk.Revit.DB.Reference.Element' is
// obsolete: Property will be removed. Use
// Document.GetElement(Reference) instead.
//Wall wall = r.Element as Wall; // 2011
Wall wall = doc.GetElement( r ) as Wall; // 2012
//Parameter parameter = wall.get_Parameter( "Unconnected Height" ); // 2014, causes warning CS0618: 'Autodesk.Revit.DB.Element.get_Parameter(string)' is obsolete: 'This property is obsolete in Revit 2015, as more than one parameter can have the same name on a given element. Use Element.Parameters to obtain a complete list of parameters on this Element, or Element.GetParameters(String) to get a list of all parameters by name, or Element.LookupParameter(String) to return the first available parameter with the given name.'
Parameter parameter = wall.get_Parameter( BuiltInParameter.WALL_USER_HEIGHT_PARAM ); // 2015, avoids warning, in language indepependent and more effective to look up
ParameterValueProvider pvp
= new ParameterValueProvider( parameter.Id );
FilterNumericRuleEvaluator fnrv
= new FilterNumericGreater();
FilterRule fRule
= new FilterDoubleRule( pvp, fnrv, 20, 1E-6 );
ElementParameterFilter filter
= new ElementParameterFilter( fRule );
FilteredElementCollector collector
= new FilteredElementCollector( doc );
// Find walls with unconnected height
// less than or equal to 20:
ElementParameterFilter lessOrEqualFilter
= new ElementParameterFilter( fRule, true );
IList<Element> lessOrEqualFounds
= collector.WherePasses( lessOrEqualFilter )
.OfCategory( BuiltInCategory.OST_Walls )
.OfClass( typeof( Wall ) )
.ToElements();
TaskDialog.Show( "Revit", "Walls found: "
+ lessOrEqualFounds.Count );
return Result.Succeeded;
}
