**//// <summary>    /// 圖片切割函數    /// </summary>    /// <param name="sourceFile">原始圖片文件</param>    /// <param name="xNum">在Ｘ軸上的切割數量</param>    /// <param name="yNum">在Ｙ軸上的切割數量</param>    /// <param name="quality">質量壓縮比</param>    /// <param name="outputFile">輸出文件名，不帶后綴</param>    /// <returns>成功返回true，失敗則返回false</returns>    public static bool imageCut(String sourceFile, int xNum, int yNum, long quality, String outputFile)    {        try        {            long imageQuality                        =    quality;            Bitmap sourceImage                       =    new Bitmap(sourceFile);            ImageCodecInfo myImageCodecInfo          =    GetEncoderInfo("image/jpeg");            Encoder myEncoder                        =    Encoder.Quality;            EncoderParameters myEncoderParameters    =    new EncoderParameters(1);            EncoderParameter myEncoderParameter      =    new EncoderParameter(myEncoder, imageQuality);            myEncoderParameters.Param[0]             =    myEncoderParameter;            float xWidth                             =    sourceImage.Width / xNum;            float yWidth                             =    sourceImage.Height / yNum;            String outputImage                       =    "";                        for (int countY = 0; countY < yNum; countY++)                for (int countX = 0; countX < xNum; countX++)                {                    RectangleF cloneRect             =    new RectangleF(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;        }    }    #endregion imageCut    imageCompress#regionimageCompress    /**//// <summary>    /// 圖片壓縮函數    /// </summary>    /// <param name="sourceFile">原始圖片文件</param>    /// <param name="quality">質量壓縮比</param>    /// <param name="ouputFile">輸出文件名,請用 .jpg 后綴 </param>    /// <returns>成功返回true，失敗則返回false</returns>    public static bool imageCompress(String sourceFile,long quality,String outputFile)    {        try        {            long imageQuality                      =    quality;            Bitmap sourceImage                     =    new Bitmap(sourceFile);            ImageCodecInfo myImageCodecInfo        =    GetEncoderInfo("image/jpeg");            Encoder myEncoder                      =    Encoder.Quality;            EncoderParameters myEncoderParameters  =    new EncoderParameters(1);            EncoderParameter myEncoderParameter    =    new EncoderParameter(myEncoder, imageQuality);            myEncoderParameters.Param[0]           =    myEncoderParameter;                       sourceImage.Save(outputFile, myImageCodecInfo, myEncoderParameters);            return true;        }        catch        {            return false;        }    }    #endregion imageCompress    getThumImage#region getThumImage    /**//// <summary>    /// 生成縮略圖    /// </summary>    /// <param name="sourceFile">原始圖片文件</param>    /// <param name="quality">質量壓縮比</param>    /// <param name="mult