Generate thumbnails of high-quality small spaces C # code

Using system;using system.collections.generic;using system.linq;using system.text;using System.Drawing;using System.IO;        Namespace Consoleapplication3_thumbnailimg{class Program {const int HEIGHT = 190;        const int WIDTH = 190;            static void Main (string[] args) {string srcimgpath = @ "G:\photoes\20060725\Picture 057.jpg";             String targetfolder = @ "E:\Diary\Test\thumbnail";            Setthumbnail_1 (Srcimgpath, TargetFolder);            Setthumbnail_2 (Srcimgpath, TargetFolder);             Setthumbnail_3 (Srcimgpath, TargetFolder);        Console.read (); } static void Setthumbnail_1 (String srcimgpath, String targetfolder) {using (Bitmap Source = NE                    W Bitmap (Srcimgpath)) {//return the source image if it ' s smaller than the designated thumbnail                int WI, HI;                WI = WIDTH;                 hi = HEIGHT; Maintain the aspect ratio desPite the thumbnail size parameters if (source. Width > Source.                    Height) {wi = WIDTH; hi = (int) (source. Height * (decimal) Width/source.                Width));                    } else {hi = HEIGHT; WI = (int) (source. Width * ((decimal) Height/source.                Height)); } using (Image thumb = source. Getthumbnailimage (WI, Hi, null, IntPtr.Zero)) {string TargetPath = Path.Combine (targetf                    Older, "th_1.jpg"); Thumb.                Save (TargetPath); }}}} static void Setthumbnail_2 (String srcimgpath, String targetfolder) {USI Ng (Bitmap Source = new Bitmap (Srcimgpath)) {//return the source image if it ' s smaller than th                e designated thumbnail int wi, hi;                WI = WIDTH;   hi = HEIGHT;              Maintain the aspect ratio despite the thumbnail size parameters if (source. Width > Source.                    Height) {wi = WIDTH; hi = (int) (source. Height * (decimal) Width/source.                Width));                    } else {hi = HEIGHT; WI = (int) (source. Width * ((decimal) Height/source.                Height)); }//Original code that creates lousy thumbnails//System.Drawing.Image ret = source.                   Getthumbnailimage (Wi,hi,null,intptr.zero); using (System.Drawing.Bitmap thumb = new Bitmap (WI, HI)) {using (Graphics g = Graphics. FromImage (thumb)) {G.interpolationmode = System.Drawing.Drawing2D.Interpolation                        Mode.highqualitybicubic;                        G.fillrectangle (brushes.white, 0, 0, WI, HI); G.drawimage (Source, 0, 0, WI, HI);                    } String TargetPath = Path.Combine (TargetFolder, "th_2.jpg"); Thumb.                Save (TargetPath); }}} static void Setthumbnail_3 (String srcimgpath, String targetfolder) {// Configure JPEG Compression Engine System.Drawing.Imaging.EncoderParameters encoderparams = new System.drawin            G.imaging.encoderparameters ();            long[] quality = new LONG[1];            Quality[0] = 75; System.Drawing.Imaging.EncoderParameter Encoderparam = new System.Drawing.Imaging.EncoderParameter (            System.Drawing.Imaging.Encoder.Quality, quality);             Encoderparams.param[0] = Encoderparam;            system.drawing.imaging.imagecodecinfo[] Arrayici = System.Drawing.Imaging.ImageCodecInfo.GetImageEncoders ();            System.Drawing.Imaging.ImageCodecInfo Jpegici = null;           for (int x = 0; x < arrayici.length; × x + +) {     if (Arrayici[x].                    Formatdescription.equals ("JPEG")) {Jpegici = arrayici[x];                Break                }} using (Bitmap Source = new Bitmap (Srcimgpath)) {int WI, HI;                WI = WIDTH;                 hi = HEIGHT; Maintain the aspect ratio despite the thumbnail size parameters if (source. Width > Source.                    Height) {wi = WIDTH; hi = (int) (source. Height * (decimal) Width/source.                Width));                    } else {hi = HEIGHT; WI = (int) (source. Width * ((decimal) Height/source.                Height)); }//Original code that creates lousy thumbnails//System.Drawing.Image ret = source.                   Getthumbnailimage (Wi,hi,null,intptr.zero); using (System.Drawing.Bitmap thumb = new Bitmap(WI, HI)) {using (Graphics g = graphics.fromimage (thumb)) {G.interpol                        Ationmode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;                        G.fillrectangle (brushes.white, 0, 0, WI, HI);                    G.drawimage (source, 0, 0, WI, HI);                    } String TargetPath = Path.Combine (TargetFolder, "th_3.jpg"); Thumb.                Save (TargetPath, Jpegici, encoderparams); }             }         }    }}

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