Question

i am using this code to take a jpg image and save it as a thumbnail but it seems very slow ..

        Image thumbNail = image.GetThumbnailImage(width, height, null, new IntPtr()); 

is there any faster way to generate a large amount of thumbnails from a directory of images?

Answer 1

Try Draw Image – Re Edited

    public Image ResizeImage(Image openImage, int NewWidth, int NewHeight) {         var openBitmap = new Bitmap(openImage);         var newBitmap = new Bitmap(NewWidth, NewHeight);         using (Graphics g = Graphics.FromImage(openBitmap))         {             g.InterpolationMode = InterpolationMode.HighQualityBicubic;             g.PixelOffsetMode = PixelOffsetMode.HighQuality;             g.DrawImage(newBitmap, new Rectangle(0, 0, NewWidth, NewHeight));         }         openBitmap.Dispose(); //Clear The Old Large Bitmap From Memory          return (Image)newBitmap;     } 

Typical 3-4mb Image Takes Between 4-8ms