topic Re: Get grids form PickObjects Selection in Revit API Forum

Get grids form PickObjects Selection

luisdavid.mena — Tue, 02 Nov 2021 21:15:42 GMT

Hello

How can I get Grids from a List of Elements that I got with PickObjects method?

IList<Element> elemen_x = new List<Element>(); Selection sel = uidoc.Selection; var axis_x = sel.PickObjects(ObjectType.Element).ToList(); foreach(Reference e in axis_x) { var ele = doc.GetElement(e); elemen_x.Add(ele); }

Re: Get grids form PickObjects Selection

RPTHOMAS108 — Wed, 03 Nov 2021 01:50:02 GMT

Cast Element to Grid

Type-testing operators and cast expression - C# reference | Microsoft Docs

Re: Get grids form PickObjects Selection

Sean_Page — Wed, 03 Nov 2021 04:51:27 GMT

If you only want grids you can use the ISeletionFilter.

https://www.revitapidocs.com/2015/8038c1e1-262e-5d25-c065-b75b9ba98603.htm

Or you can use if check to see if it's a grid:

foreach(Reference e in axis_x) { If(doc.GetElement(e) is Grid grid) { elemen_x.Add(grid); } }

Re: Get grids form PickObjects Selection

luisdavid.mena — Wed, 03 Nov 2021 15:00:40 GMT

Thanks @RPTHOMAS108 . It was indeed the casting to Grids. Also what you suggest @Sean_Page is very usefull for me!