public Result Execute(
ExternalCommandData commandData,
ref string message,
ElementSet elements)
{
UIApplication app = commandData.Application;
UIDocument uidoc = app.ActiveUIDocument;
Document doc = uidoc.Document;
// Get all Group Types of Model Family:
FilteredElementCollector modelGroupTypes
= new FilteredElementCollector(doc);
modelGroupTypes.OfClass(typeof(GroupType));
modelGroupTypes.OfCategory(BuiltInCategory.OST_IOSModelGroups);
if (0 == modelGroupTypes.Count())
{
message = "No model group types found in model.";
return(Result.Failed);
}
FilteredElementCollector groups;
groups = new FilteredElementCollector(doc);
groups.OfClass(typeof(Group));
foreach (Group g in groups)
{
// Offer simple message box to swap the type
// (one-by-one, stop if user confirms the change)
foreach (GroupType gt in modelGroupTypes)
{
string msg = "Swap OLD Type=" + g.GroupType.Name
+ " with NEW Type=" + gt.Name
+ " for Group Id=" + g.Id.IntegerValue.ToString() + "?";
TaskDialogResult r = LabUtils.QuestionCancelMsg(msg);
switch (r)
{
case TaskDialogResult.Yes:
g.GroupType = gt;
LabUtils.InfoMsg("Group type successfully swapped.");
return(Result.Succeeded);
case TaskDialogResult.Cancel:
LabUtils.InfoMsg("Command cancelled.");
return(Result.Cancelled);
// else continue...
}
}
}
/*
* //
* // cannot modify group members after creation:
* //
* Element e = null;
* ElementArray els = new ElementArray();
* els.Append( e );
* Group g = new Group();
* g.Members = els; // Property or indexer 'Autodesk.Revit.Elements.Group.Members' cannot be assigned to -- it is read only
* Element e2 = null;
* els.Append( e2 );
* g.Members = els;
*/
return(Result.Succeeded);
}
