public void Convert(string source, string destination, string type) { System.Drawing.Image image = System.Drawing.Image.FromFile(source); StrategyContext context; switch (type.ToLower()) { case "jpeg": case "jpg": context = new StrategyContext(new ConvertToJpeg()); break; case "gif": context = new StrategyContext(new ConvertToGif()); break; case "png": context = new StrategyContext(new ConvertToPng()); break; default: throw new Exception("Wrong file format chosen!"); } context.ConvertImage(image, destination); }
public void Convert(string source, string destination, string type) { //byte[] img_bytes = File.ReadAllBytes(source); //read img file into memory //MemoryStream img_ms = new MemoryStream(img_bytes); //Image img = Image.FromStream(img_ms); //MemoryStream save_ms = new MemoryStream(); //((Bitmap)img).Save(save_ms, ImageFormat.Jpeg); //byte[] resaved_img = save_ms.ToByteArray(); //create object from source file Image image = Image.FromFile(source); //implement context strategy from context using IMG object instead of source... StrategyContext context; switch (type.ToLower()) { case "jpeg": case "jpg": context = new StrategyContext(new ConvertToJpeg()); break; case "gif": context = new StrategyContext(new ConvertToGif()); break; case "png": context = new StrategyContext(new ConvertToPng()); break; default: throw new Exception("Wrong file format chosen!"); } context.ConvertImage(image, destination); }