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        Compound
         | 
    Retrieves the number of interior or exterior shell layers.
   
   Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.0.4.0 (26.0.4.0)
 Syntax
     Syntax
    
   Parameters
- shellLayerType ShellLayerType
- If ShellLayerType.Exterior return the number of exterior shell layers (or top shell layers for a roof, floor, or ceiling type). If ShellLayerType.Interior return the number of interior shell layers (or bottom shell layers for a roof, floor, or ceiling type).
Return Value
Int32The number of shell layers in the interior or exterior shell, as specified by shellLayerType.
 Exceptions
     Exceptions
    
   | Exception | Condition | 
|---|---|
| ArgumentOutOfRangeException | A value passed for an enumeration argument is not a member of that enumeration | 
 Remarks
     Remarks
    
   
    There could be no core layers. You can change the shell/core layer boundary using
    
     SetNumberOfShellLayers(ShellLayerType, Int32)
    
    .
   
    See Also
     See Also