How Can I active a LOD (Level of Detail) with iLogic?

[王承之pmhker]

I create some LOD in assembly, and i want activate one of them with ilogic，how can i do ?

[Sergio.D.Suárez · Accepted solution]

Hi, try this ilogic code, it is a way to show how you can access the LOD.

Dim oDoc As AssemblyDocument = ThisDoc.Document  
Dim oDef As ComponentDefinition = oDoc.ComponentDefinition 

Dim ActLOD As String = oDef.RepresentationsManager.ActiveLevelOfDetailRepresentation.name

Dim oList As New ArrayList

For i As Integer = 1 To oDef.RepresentationsManager.LevelOfDetailRepresentations.count
	oList.Add( oDef.RepresentationsManager.LevelOfDetailRepresentations(i).name)
Next

oValue = InputListBox("Select LOD", oList, ActLOD, "Ilogic - LOD", "Available Selections")

oDef.RepresentationsManager.LevelOfDetailRepresentations.Item(oValue).Activate(True)

 I hope this can help you develop your own code.
regards

[王承之pmhker]

Thanks very much，your answer is exactly what i need.

[Guido.LangeTuchscherer]

@Sergio.D.Suárez 

Hi there, do some of you maybe know how to decifer if a level of detail actually exists?

Just after suppressing a part in an assembly, I can get the active LOD and then my way was to use Try (Catch) to activate the LOD (if existing), which unfortunately always succeeds, it just writes a new actual one. When the active LOD actually exists there is no problem, but when there only is a temporary one it will generate new LOD everytime I save.

Dim asDoc As AssemblyDocument = ThisDoc.Document
aComp = asDoc.ComponentDefinition

'Position der Detailgenauigkeit erfassen
Dim ActLOD As String = aComp.RepresentationsManager.ActiveLevelOfDetailRepresentation.Name

Try 
	aComp.RepresentationsManager.LevelOfDetailRepresentations.Item(ActLOD).Activate(True)
	'MsgBox(ActLOD & " gesetzt")
Catch
	AcLOD = "TempDetailgenauigkeit"
	'MsgBox(AcLOD & " erstellt")
'Finally
	aComp.RepresentationsManager.LevelOfDetailRepresentations.Add(AcLOD)
	'MsgBox(AcLOD & " aktiviert")
End Try 

I got the issue in different words here: https://forums.autodesk.com/t5/inventor-customization/setting-representation-level-of-detail-fails-d...