C #. net generates clear thumbnails,

C #. net generates clear thumbnails,

1 public void imgsize () 2 {3 // This example assumes two variables: 4 5 String src = "c:/myImages/a.jpg "; // absolute path of the source image file 6 String dest = "c:/myImages/a_th.jpg"; // the absolute path of the generated thumbnail image file 7 8 int thumbWidth = 132; // The width of the thumbnail to be generated 9 int thumbHeight = 100; // The height of the thumbnail to be generated 10 System. drawing. image image = System. drawing. image. fromFile (src); // use the Image object to load the source Image 11 12 // create a System. drawing. bitmap object, and set the width and height of the thumbnail you want. 13 int srcWidth = image. width; 14 int srcHeight = image. height; 15 Bitmap bmp = new Bitmap (thumbWidth, thumbHeight); 16 17 // create a System from Bitmap. drawing. graphics object, used to draw high-quality zoom-out graphs. 18 System. drawing. graphics gr = System. drawing. graphics. fromImage (bmp); 19 20 // set System. drawing. the SmoothingMode attribute of the Graphics object is HighQuality21 gr. smoothingMode = System. drawing. drawing2D. smoothingMode. highQuality; 22 23 // The following is also set to high quality 24 gr. compositingQuality = System. drawing. drawing2D. compositingQuality. highQuality; 25 26 // set this to High27 gr. interpolationMode = System. drawing. drawing2D. interpolationMode. high; 28 29 // draw the original image as the scaled down image with the configured width and height 30 System. drawing. rectangle rectDestination = new System. drawing. rectangle (0, 0, thumbWidth, thumbHeight); 31 gr. drawImage (image, rectDestination, 0, 0, srcWidth, srcHeight, GraphicsUnit. pixel); 32 33 // Save the image! 34 bmp. Save (dest); 35 36 // do not forget to release the resource 37 bmp. Dispose (); 38 image. Dispose (); 39}