Sets if the mosaic layer is to be shown in the map. Set this to false to improve performance if it is not necessary to immediately see your imagery or raster dataset. This method must be called on the MCT. Use QueuedTask.Run.

Public Sub SetIsMosaicPreviewVisible( _
   ByVal isVisible As Boolean _
) 

public void SetIsMosaicPreviewVisible( 
   bool isVisible
)