topic Re: Get Element's LevelID through .LevelID or through Params in Revit API Forum

Get Element's LevelID through .LevelID or through Params

Anonymous — Mon, 08 Oct 2018 11:40:12 GMT

In a model that I'm analyzing I find many elements where their

element.LevelId

is -1, but the

element.LookupParameter("Level").AsElementId().IntegerValue

Has a valid level value.

What is the difference, and should I fall back from the first method to the second one if the value is -1?

Re: Get Element's LevelID through .LevelID or through Params

naveen.kumar.t — Mon, 08 Oct 2018 12:37:01 GMT

Hi @Anonymous,

Both are same and returns you the same value

Element.LevelId gives you Id of your selected element Level.

Element.LookupParameter("Level").AsElementId().IntegerValue will search for the parameter "Level"and gets the elementid of the level and displays it as an integer value.

Re: Get Element's LevelID through .LevelID or through Params

Anonymous — Mon, 08 Oct 2018 13:34:55 GMT

In the model I'm working on there are hundreds of elements where these 2 values are different.

element.LevelId is -1, and the second method returns a valid ID (not -1)

Re: Get Element's LevelID through .LevelID or through Params

draynorQNHWR — Fri, 17 May 2019 16:57:53 GMT

I ran into this today as well. The elements in question were created via a 3rd party application. I was able to get the level id via a different route.

Level lvl = doc.GetElement(pipe.ReferenceLevel.Id) as Level;

Hope that helps.

Re: Get Element's LevelID through .LevelID or through Params

grubdex — Wed, 26 Oct 2022 22:34:16 GMT

I'm having the exact same problem. I placed a standard Two Way Switch into my model.

Revit Lookup shows LevelId as -1, but the schedule level is set correctly in the element's Properties view, plus the correct level can be found in the family instance's Parameters for both the Schedule Level and the Level Parameter (checked via Revit Lookup). Does this have to do with the way the families are inserted? This makes any type of filtering via ElementLevelFilter extremely error-prone.

Edit: Here is a super simple example of what I mean. Note the light switch in Room 3.

Re: Get Element's LevelID through .LevelID or through Params

jeremy_tammik — Thu, 27 Oct 2022 07:55:09 GMT

Thank you for the sample model. I passed it on to the development team and asked them for an explanation.