ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMVoxelUniqueValueRenderer Class / Classes Property
Example Version

Classes Property (CIMVoxelUniqueValueRenderer)
Gets or sets the unique color classes of the renderer.
Syntax
public CIMVoxelColorUniqueValue[] Classes {get; set;}
Example
Change The Visibility on a CIMVoxelColorUniqueValue class
//Get the variable profile whose renderer will be changed
var variable = voxelLayer.SelectedVariableProfile;

//Check DataType
if (variable.DataType != VoxelVariableDataType.Discrete)
    return;//must be Discrete to have a UV Renderer...

var renderer = variable.Renderer as CIMVoxelUniqueValueRenderer;

//A CIMVoxelUniqueValueRenderer consists of a collection of
//CIMVoxelColorUniqueValue classes - one per discrete value
//in the associated variable profile value array

//Get the first class
var classes = renderer.Classes.ToList();
var unique_value_class = classes.First();
//Set its visibility off
unique_value_class.Visible = false;

//Apply the change to the renderer
renderer.Classes = classes.ToArray();
//apply the changes
variable.SetRenderer(renderer);
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also