public static string RenderIcon(Guid? source, int width, int height) { var contentService = new ContentService("Sergey_GKOPC"); Drawing drawing; if (source.HasValue) { drawing = contentService.GetDrawing(source.Value); if (drawing == null) { return string.Empty; } } else { return string.Empty; } drawing.Freeze(); return InternalConverter.XamlDrawingToPngBase64String(width, height, drawing); }