ArcGIS.MapService.GetLegendImage C# (CSharp) Метод

        public static Bitmap GetLegendImage(string serviceUri,
            int width,
            int height,
            int resolution,
            Font font,
            bool antialias)
        {
            MapServerProxy proxy = new MapServerProxy(serviceUri);
            string mapName = proxy.GetDefaultMapName();
            ImageType imageType = new ImageType();
            imageType.ImageFormat = esriImageFormat.esriImageBMP;
            imageType.ImageReturnType = esriImageReturnType.esriImageReturnMimeData;
            MapServerLegendInfo[] legends = proxy.GetLegendInfo(mapName, null, null, imageType);
            List<Bitmap> legendEntries = new List<Bitmap>();
            Bitmap result = null;
            if (height > 0) {
                result = new Bitmap(width, height);
                result.SetResolution(resolution, resolution);
            }
            if (legends != null && legends.Length > 0) {
                Bitmap scratchBitmap = result;
                if (scratchBitmap == null) {
                    scratchBitmap = new Bitmap(width, 500);
                    scratchBitmap.SetResolution(resolution, resolution);
                }
                LegendBitmapGenerator gen = new LegendBitmapGenerator(scratchBitmap);
                gen.Margin = 10;
                gen.IndentLevel = 0;
                gen.Font = font;
                gen.Brush = new SolidBrush(System.Drawing.Color.Black);
                gen.Antialias = antialias;
                foreach (MapServerLegendInfo legend in legends) {
                    if (legend.Name.Length > 0) {
                        legendEntries.Add(gen.Generate(legend.Name));
                    }
                    gen.IndentLevel += 1;
                    foreach (MapServerLegendGroup group in legend.LegendGroups) {
                        if (group.Heading.Length > 0) {
                            legendEntries.Add(gen.Generate(group.Heading));
                        }
                        gen.IndentLevel += 1;
                        foreach (MapServerLegendClass legendClass in group.LegendClasses) {
                            legendEntries.Add(gen.Generate(new Bitmap(new System.IO.MemoryStream(legendClass.SymbolImage.ImageData)),
                                                           legendClass.Label));
                        }
                        gen.IndentLevel -= 1;
                    }
                    gen.IndentLevel -= 1;
                }
                gen.Dispose();
            }
            int legendEntryPadding = 2;
            if (result == null) {
                height = legendEntryPadding;
                foreach (Bitmap entry in legendEntries) {
                    height += legendEntryPadding + entry.Height;
                }
                result = new Bitmap(width, height);
                result.SetResolution(resolution, resolution);
            }
            int currentY = legendEntryPadding;
            Graphics graphics = Graphics.FromImage(result);
            graphics.Clear(System.Drawing.Color.White);
            foreach (Bitmap entry in legendEntries) {
                if ((currentY + entry.Height) <= height) {
                    graphics.DrawImage(entry, 0, currentY);
                    currentY += legendEntryPadding + entry.Height;
                }
            }
            graphics.Dispose();
            //result.MakeTransparent(result.GetPixel(0, 0));
            return result;
        }