public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
UIApplication _uiapp = commandData.Application;
UIDocument _uidoc = _uiapp.ActiveUIDocument;
Document _doc = _uidoc.Document;
Autodesk.Revit.DB.View activeV = _doc.ActiveView;
SelectionFilterElement filterElement = new FilteredElementCollector(_doc)
.OfClass(typeof(SelectionFilterElement)).Cast <SelectionFilterElement>()
.Where(sf => sf.Name.Equals("Voiles Porteurs"))
.FirstOrDefault();
using (Transaction t = new Transaction(_doc, "Remove walls from filter"))
{
t.Start();
bool filterExistsInActiveView = false;
if (activeV.GetFilters().Count != 0)
{
foreach (ElementId id in activeV.GetFilters())
{
if (_doc.GetElement(id).Name.Equals("Voiles Porteurs"))
{
filterExistsInActiveView = true;
}
}
}
if (!filterExistsInActiveView)
{
MessageBox.Show("No filter is added to the active view!");
return(Result.Cancelled);
}
else
{
IList <Reference> refIds;
try
{
refIds = _uidoc.Selection.PickObjects(ObjectType.Element,
new WallSelectionFilter(activeV.GenLevel.Id, filterElement));
}
catch (OperationCanceledException)
{
return(Result.Cancelled);
}
catch (Exception)
{
return(Result.Failed);
}
foreach (Reference refe in refIds)
{
filterElement.RemoveSingle(refe.ElementId);
}
activeV.RemoveFilter(filterElement.Id);
ViewTemplate.AddFilterToView(
_doc, activeV, filterElement,
new Color(000, 128, 255), new string[] { "Uni", "Solid fill" },
new Color(000, 128, 255), new string[] { "Uni", "Solid fill" });
}
t.Commit();
}
_uidoc.RefreshActiveView();
return(Result.Succeeded);
}