topic Re: Simple code crashes Revit in Revit API Forum

Simple code crashes Revit

Anonymous — Sat, 26 May 2012 02:49:47 GMT

I'm trying to get code from this sample: http://thebuildingcoder.typepad.com/blog/2010/05/duplicate-legend-component.html to run.

I am using Revit 2013 so I had to make some changes:

ICollection<ElementId> SelectedIds = m_UIDoc.Selection.GetElementIds();
Group group = m_doc.Create.NewGroup(SelectedIds);

Revit died on the NewGroup call. There was one ElementId in the selection.

I put an exception handler around it and got this message:

"External component has thrown an exception."

Any ideas?

Also, is there any other way to clone/copy an Element?

Thanks

Re: Simple code crashes Revit

Anonymous — Sat, 26 May 2012 16:30:45 GMT

FYI: I found the problem was that I was calling the code from a modeless dialog box. Apparently Revit doesn't like this.

Re: Simple code crashes Revit

ollikat — Mon, 28 May 2012 05:07:08 GMT

@Anonymous wrote:
...Apparently Revit doesn't like this.

The Essential question is, what did happen to your main thread of the add-in after the modeless dialog was launched? Because that is the only thread you can call Revit API.