How delete Level element?

[Anonymous]

It's so surprise,the document.delete(ElementId id) can't delete the element of Level!By the way,I tried delete all ViewPlans which connect with the level before delete it!

[Joe.Ye]

Hello， I just wrote some SharpDevelop code, the macro can delete any plan level without deleting any related views. public void ShowJoinedElemnet() { Document doc = this.ActiveUIDocument.Document; Selection sel = this.ActiveUIDocument.Selection; Reference ref1 = sel.PickObject(ObjectType.Element,"Please an element"); Element elem = doc.GetElement(ref1); ICollection ids = JoinGeometryUtils.GetJoinedElements(doc,elem); foreach(ElementId id in ids) { Element item = doc.GetElement(id); sel.Elements.Add(item); } } What's the error message did you get? Did you try start a transaction?

[Anonymous]

Wow, man... I didn't expect the use of C# in revit. 

I've got the following error - "Expected class, delegate, enum, interface, or struct (CS1518) " 

I've got no clue what it means, but I'm willing to understand since I'm stuck at the same point as the person who opened the thread.

[jeremytammik]

If you are surprised by the use of C# in the Revit API, I suggest you take a look at the getting started material:

http://thebuildingcoder.typepad.com/blog/about-the-author.html#2

Best regards,

Jeremy

[aurbinat]

I created this method for deleting all levels in a document, the trick here is to pass the parameter for document.Delete(ICollection) with a ICollection, not as a single element. Since ICollection is only and interface I used List for adding ElmentId.  I think it could work even if you add just one element, which is your case.

public int DeleteExistingLevels(Document document){
            int deleted = 0;
            FilteredElementCollector collector = new FilteredElementCollector(document);
            ICollection<Element> levels = collector.OfClass(typeof(Level)).ToElements();
            List<ElementId> elementsToBeDeleted = new List<ElementId>();

            foreach(Element element in levels)
            {
                elementsToBeDeleted.Add(element.Id);
                deleted++;
            }
            document.Delete(elementsToBeDeleted);       
            return deleted;
        }