Images, GDI+, Quality

Question

User1173753381 posted

Hello!

I am trying to resize an image and I've made a canvas to draw the image in, I will also draw there some copyright stuff and DrawString etc. later.

The problem is that all the images that I draw in the canvas, g.DrawImage etc. will be in s**t quality, REALLY bad quality!

I want to make all the images that I draw in the canvas top quality. How do I achive this? The code is below.

Thanks in advance!

void Test()
 {
  System.Drawing.Image image = System.Drawing.Image.FromFile("C:\\Inetpub\\wwwroot\\test10.jpg");
  System.Drawing.Image canvas = new Bitmap(205, 288, image.PixelFormat);

  Graphics g = Graphics.FromImage(canvas);

  g.CompositingQuality = CompositingQuality.HighQuality;
  g.SmoothingMode = SmoothingMode.HighQuality;
  g.InterpolationMode = InterpolationMode.HighQualityBicubic;

  g.DrawImage(image, 0, 0, 205, 288);

  canvas.Save("C:\\Inetpub\\wwwroot\\" + Guid.NewGuid() + "_Dildo_Dildo_12345.jpg", ImageFormat.Jpeg);

  image.Dispose();
  canvas.Dispose();
 }

Answer 1

User2032526919 posted

Hi,

you probably need to take use of overload of Save method which lets you better control the quality & image codec.

Image.Save Method (String, ImageCodecInfo, EncoderParameters)  
http://msdn.microsoft.com/en-us/library/ytz20d80(VS.80).aspx

Usage example:
http://msdn.microsoft.com/en-us/library/system.drawing.imaging.encoder.quality(VS.80).aspx