| Revit 2024 API | 
| CompoundStructure..::..GetMaterialId Method | 
| CompoundStructure Class See Also | 
   Retrieves the material element id of a specified layer.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
 Syntax
Syntax
| C# | 
|---|
| public ElementId GetMaterialId( int layerIdx ) | 
| Visual Basic | 
|---|
| Public Function GetMaterialId ( _ layerIdx As Integer _ ) As ElementId | 
| Visual C++ | 
|---|
| public: ElementId^ GetMaterialId( int layerIdx ) | 
Parameters
- layerIdx
- Type: System..::..Int32
 Index of a layer in the CompoundStructure.
Return Value
The material element id. Exceptions
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions..::..ArgumentOutOfRangeException | The layer index is out of range. |