Levels from document do not match levels from viewplans

[Anonymous]

I am working on a utility to quickly jump up or down a level in a project. I have run into an issue where I have collected and sorted by elevation all the levels in a project

        private List<Level> GetAllLevels()
        {
            FilteredElementCollector levelCollector = new FilteredElementCollector(m_doc);
            List<Level> levelCollection = levelCollector.OfClass(typeof(Level)).OfType<Level>().OrderBy(l => l.Elevation).ToList();
            return levelCollection;
        }

I then am comparing the levels to the active views level. (I am ensuring first that the active view is a plan view)

Level currentLevel = doc.ActiveView.GenLevel;

A match is never found for the levels.

The attached image is from the Locals window of VS. projectLevel is the level in the loop, and currentLevel is the level of the active view. They appear to be the same, but are not a match.  Why?

I could try to match elevation of the levels, or the AssociatedPlanViewId of the level, but I thought that they should be the same object.

[BobbyC.Jones]

Match on Id's of the levels, not the levels themselves.

[Anonymous]

Unfortunately, the LevelId property always returns -1.  I am currently using the Name Property, since it looks like it has to be unique.

[BobbyC.Jones · Accepted solution]

For Level elements, just use the Id property, not LevelId.