C # Picture cutting, image compression, thumbnail generated code

**//// <summary>    ///Picture cutting function/// </summary>    /// <param name= "SourceFile" >Original picture file</param>    /// <param name= "Xnum" >number of cuts on the x-axis</param>    /// <param name= "Ynum" >number of cuts on the y-axis</param>    /// <param name= "Quality" >Mass Compression ratio</param>    /// <param name= "OutputFile" >output file name with no suffix</param>    /// <returns>Success Returns True, Failure returns false</returns>     Public Static BOOLImagecut (String sourcefile,intXnum,intYnum,Longquality, String outputFile) {        Try        {            LongImageQuality =quality; Bitmap Sourceimage=NewBitmap (sourcefile); ImageCodecInfo Myimagecodecinfo= Getencoderinfo ("Image/jpeg"); Encoder Myencoder=encoder.quality; EncoderParameters myencoderparameters=NewEncoderParameters (1); Encoderparameter Myencoderparameter=NewEncoderparameter (Myencoder, imagequality); myencoderparameters.param[0]             =Myencoderparameter; floatXwidth = sourceimage.width/Xnum; floatYwidth = sourceimage.height/Ynum; String Outputimage="";  for(intCounty =0; County < Ynum; county++)                 for(intCountx =0; Countx < Xnum; countx++) {RectangleF clonerect=NewRectangleF (COUNTX * xwidth, County *ywidth, Xwidth, ywidth); Bitmap NewImage=Sourceimage.clone (Clonerect, PIXELFORMAT.FORMAT24BPPRGB); Outputimage= outputFile + countx + County +". jpg";                 Newimage.save (Outputimage, Myimagecodecinfo, myencoderparameters); }            return true; }        Catch        {            return false; }     }    #endregionImagecutimagecompress#regionimagecompress/**//// <summary>    ///image compression Function/// </summary>    /// <param name= "SourceFile" >Original picture file</param>    /// <param name= "Quality" >Mass Compression ratio</param>    /// <param name= "Ouputfile" >output file name, using a. jpg suffix</param>    /// <returns>Success Returns True, Failure returns false</returns>     Public Static BOOLImagecompress (String sourcefile,Longquality,string OutputFile) {        Try        {            LongImageQuality =quality; Bitmap Sourceimage=NewBitmap (sourcefile); ImageCodecInfo Myimagecodecinfo= Getencoderinfo ("Image/jpeg"); Encoder Myencoder=encoder.quality; EncoderParameters myencoderparameters=NewEncoderParameters (1); Encoderparameter Myencoderparameter=NewEncoderparameter (Myencoder, imagequality); myencoderparameters.param[0]           =Myencoderparameter;            Sourceimage.save (OutputFile, Myimagecodecinfo, myencoderparameters); return true; }        Catch        {            return false; }     }    #endregionImagecompressGetthumimage#regionGetthumimage/**//// <summary>    ///generate thumbnail images/// </summary>    /// <param name= "SourceFile" >Original picture file</param>    /// <param name= "Quality" >Mass Compression ratio</param>    /// <param name= "multiple" >Shrink Multiples</param>    /// <param name= "OutputFile" >Output File name</param>    /// <returns>Success Returns True, Failure returns false</returns>     Public Static BOOLGetthumimage (String sourcefile,LongQuality,intmultiple, String outputFile) {        Try        {            LongImageQuality =quality; Bitmap Sourceimage=NewBitmap (sourcefile); ImageCodecInfo Myimagecodecinfo= Getencoderinfo ("Image/jpeg"); Encoder Myencoder=encoder.quality; EncoderParameters myencoderparameters=NewEncoderParameters (1); Encoderparameter Myencoderparameter=NewEncoderparameter (Myencoder, imagequality); myencoderparameters.param[0]           =Myencoderparameter; floatXwidth =Sourceimage.width; floatYwidth =Sourceimage.height; Bitmap NewImage=NewBitmap ((int) (Xwidth/multiple), (int) (Ywidth/multiple)); Graphics g=graphics.fromimage (newimage); G.drawimage (Sourceimage,0,0, Xwidth/multiple, Ywidth/multiple);            G.dispose ();            Newimage.save (outputfile,myimagecodecinfo,myencoderparameters); return true; }        Catch        {            return false; }    }    #endregionGetthumimageImageCodecInfo#regionImageCodecInfo/**//// <summary>    ///Get picture encoding information/// </summary>    Private Staticimagecodecinfo getencoderinfo (String mimeType) {intJ;        Imagecodecinfo[] encoders; Encoders=imagecodecinfo.getimageencoders ();  for(j =0; J < Encoders. Length; ++j) {if(Encoders[j]. MimeType = =MimeType)returnEncoders[j]; }        return NULL; }

C # Picture cutting, image compression, thumbnail generated code