Hi Igor,
The doc in the full version is exactly the same as the trial one.
This is the code was working for me:
Dim S57ChartLayer As New S57FeatureLayer(System.Windows.Forms.Application.StartupPath & "\Data\US1BS02M\US1BS02M.000", Nothing, Nothing, "Area")
S57ChartLayer.ZoomLevelSet.ZoomLevel04.DefaultAreaStyle = AreaStyles.CreateSimpleAreaStyle(GeoColor.SimpleColors.Transparent, GeoColor.FromArgb(100, GeoColor.SimpleColors.Green))
S57ChartLayer.ZoomLevelSet.ZoomLevel04.DefaultPointStyle = PointStyles.CreateSimplePointStyle(PointSymbolType.Circle, GeoColor.SimpleColors.BrightOrange, GeoColor.SimpleColors.Black, 2)
S57ChartLayer.ZoomLevelSet.ZoomLevel04.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20
Dim S57LayerOverlay As New LayerOverlay
S57LayerOverlay.Layers.Add("S57ChartLayer", S57ChartLayer)
WpfMap1.Overlays.Add("S57Overlay", S57LayerOverlay)
S57ChartLayer.Open()
WpfMap1.CurrentExtent = S57ChartLayer.GetBoundingBox
S57ChartLayer.Close()
Hope it helps.
Carlos.