ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / Layer Class / SetTransparency Method
Transparency value.
Version

SetTransparency Method
Sets the transparency of the layer. 100 being fully transparent and 0 means opaque. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
public void SetTransparency( 
   double transparency
)

Parameters

transparency
Transparency value.
Exceptions
ExceptionDescription
This method or property must be called within the lambda passed to QueuedTask.Run.
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also