/// <summary>
        /// Makes the thumbnail image.
        /// </summary>
        /// <param name="fileName">Name of the file.</param>
        /// <returns></returns>
        private string MakeThumbnailImage(string fileName)
        {
            //如果上傳圖片寬度大於 maxWidth,確定儲存上傳圖片就要做縮圖動作
            string tempFileName      = fileName;
            int    uploadImageWidth  = 0;
            int    uploadImageHeight = 0;

            using (Bitmap bitmap = new Bitmap(string.Format(@"{0}\{1}", this.UploadPath, tempFileName)))
            {
                uploadImageWidth  = bitmap.Width;
                uploadImageHeight = bitmap.Height;

                if (uploadImageWidth > this.MaxWidth || uploadImageHeight > this.MaxHeight)
                {
                    // 計算維持比例的縮圖大小
                    int[] thumbnailScale = this.GetThumbnailImageScale(this.MaxWidth, this.MaxHeight, uploadImageWidth, uploadImageHeight);

                    // 產生縮圖
                    System.Drawing.Image imgThumbnail = System.Drawing.Image.FromFile(string.Format(@"{0}\{1}", this.UploadPath, tempFileName), false);

                    System.Drawing.Image    hb       = new System.Drawing.Bitmap(thumbnailScale[0], thumbnailScale[1]);
                    System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(hb);
                    graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                    graphics.DrawImage(imgThumbnail, new Rectangle(0, 0, thumbnailScale[0], thumbnailScale[1]), 0, 0, imgThumbnail.Width, imgThumbnail.Height, GraphicsUnit.Pixel);

                    //存檔
                    fileName = String.Concat(MiscUtility.MakeGuid().Replace("-", string.Empty).Substring(0, 20), ".jpg");
                    hb.Save(string.Format(@"{0}\{1}", this.UploadPath.Replace("~", ""), fileName));

                    graphics.Dispose();
                    hb.Dispose();
                    imgThumbnail.Dispose();
                }
            }
            return(fileName);
        }
        //=========================================================================================
        // Upload Image

        #region -- ProcessUploadImage --
        /// <summary>
        /// Processes the upload image.
        /// </summary>
        /// <param name="uploadFile">The upload file.</param>
        /// <returns></returns>
        public Dictionary <string, string> ProcessUploadImage(HttpPostedFileBase uploadFile)
        {
            var jo = new Dictionary <string, string>();

            if (uploadFile.ContentLength <= 0)
            {
                jo.Add("result", "error");
                jo.Add("msg", "無內容檔案!請重新選擇檔案!");
                return(jo);
            }
            else if (uploadFile.ContentLength >= MaxRequestLength)
            {
                //容量超過指定的上限, 預設 10M (10240KB)

                string limitLength = string.Empty;

                if (this.MaxRequestLength >= (1024 * 1024))
                {
                    limitLength = string.Concat((this.MaxRequestLength / (1024 * 1024)).ToString(), " Mb");
                }
                else if ((this.MaxRequestLength / (1024 * 1024)) < 1)
                {
                    limitLength = string.Concat((this.MaxRequestLength / 1024).ToString(), " Kb");
                }

                jo.Add("result", "error");
                jo.Add("msg", string.Format("上傳檔案不可超過 {0}!請重新選擇檔案!", limitLength));
                return(jo);
            }
            else
            {
                if (!IsImage(uploadFile))
                {
                    jo.Add("result", "error");
                    jo.Add("msg", "上傳檔案並不是圖片檔!請重新選擇檔案!");
                    return(jo);
                }

                // Picture Image_Type
                var imageTypes = new string[] { "jpg", "jpeg", "png", "gif" };
                if (!imageTypes.Contains(Path.GetExtension(uploadFile.FileName).Substring(1, 3).ToLower()))
                {
                    jo.Add("result", "error");
                    jo.Add("msg", "上傳檔案的圖片檔只能接受 jpg, jpeg, png, gif!請重新選擇檔案!");
                    return(jo);
                }

                try
                {
                    //存檔

                    string fileName = String.Concat(MiscUtility.MakeGuid().Replace("-", string.Empty).Substring(0, 20), Path.GetExtension(uploadFile.FileName).ToLower());
                    uploadFile.SaveAs(string.Format(@"{0}\{1}", this.UploadPath, fileName));

                    jo.Add("result", "Success");
                    jo.Add("msg", fileName);
                }
                catch (Exception ex)
                {
                    jo.Add("result", "Failure");
                    jo.Add("msg", ex.Message);
                }
                return(jo);
            }
        }
        //=========================================================================================
        // Crop Image

        #region -- ProcessImageCrop --
        /// <summary>
        /// Processes the image crop.
        /// </summary>
        /// <param name="currentImage">The current image.</param>
        /// <param name="sectionValue">The section value.</param>
        /// <returns></returns>
        public Dictionary <string, string> ProcessImageCrop(
            UploadImage currentImage,
            int[] sectionValue)
        {
            var result = new Dictionary <string, string>();

            try
            {
                //取得裁剪的區域座標
                int sectionX1 = sectionValue[0];
                int sectionX2 = sectionValue[1];
                int sectionY1 = sectionValue[2];
                int sectionY2 = sectionValue[3];

                //取得裁剪的圖片寬高
                int width  = sectionX2 - sectionX1;
                int height = sectionY2 - sectionY1;

                //讀取原圖片
                System.Drawing.Image sourceImage = System.Drawing.Image.FromFile
                                                   (
                    string.Format(@"{0}\{1}", this.OriginalPath, currentImage.OriginalImage)
                                                   );

                //從原檔案取得裁剪圖片
                System.Drawing.Image cropImage = this.CropImage(
                    sourceImage,
                    new Rectangle(sectionX1, sectionY1, width, height)
                    );

                //將採剪下來的圖片做縮圖處理
                Bitmap resizeImage = this.ResizeImage(cropImage, new Size(this.CropWidth, this.CropHeight));

                //將縮圖處理完成的圖檔儲存為JPG格式
                string fileName = String.Concat(MiscUtility.MakeGuid().Replace("-", string.Empty).Substring(0, 20), ".jpg");
                string savePath = string.Format(@"{0}\{1}", this.CropPath, fileName);
                SaveJpeg(savePath, resizeImage, 100L);

                //釋放檔案資源
                resizeImage.Dispose();
                cropImage.Dispose();
                sourceImage.Dispose();

                //如果有之前的裁剪圖片,暫存既有的裁剪圖片檔名
                string oldCropImageFileName = string.Empty;
                if (!string.IsNullOrWhiteSpace(currentImage.CropImage))
                {
                    oldCropImageFileName = currentImage.CropImage;
                }

                //JSON
                result.Add("result", "Success");
                result.Add("OriginalImage", currentImage.OriginalImage);
                result.Add("CropImage", fileName);
                result.Add("OldCropImage", oldCropImageFileName);
            }
            catch (Exception ex)
            {
                result.Add("result", "Exception");
                result.Add("msg", ex.Message);
            }
            return(result);
        }