【在 GDI+ 中發生泛型錯誤】出現時的窘境

在處理圖片相關工作時遇過 "在 GDI+ 中發生泛型錯誤" 的錯誤，花了不少時間在偉大的GOOGLE大神中查詢了該錯誤資訊，還是一無所獲，只知道GDI+(Graphics Device Interface)負責處理影像物件相關工作，但因不容易除錯，我也能夠確定程式寫法無錯誤，我則使用將圖片先存檔在server端，並轉為jpg檔及壓縮jpg層級等級。

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[轉jpg檔及壓縮圖片層級等級]範例

                     var tempFilePath = Path .Combine(strSavePath,rows + ".tmp");

                    file.SaveAs(tempFilePath);

                    using (var result = new Bitmap(tempFilePath))

                    {

                        ImageCodecInfo jgpEncoder = null ;

                        ImageCodecInfo[] codecs = ImageCodecInfo .GetImageDecoders();

                        foreach (ImageCodecInfo codec in codecs)

                        {

                            if (codec.FormatID == ImageFormat .Jpeg.Guid)

                            {

                                jgpEncoder = codec;

                            }

                        }

                        var myEncoder = Encoder .Quality;

                        EncoderParameters myEncoderParameters = new EncoderParameters(1);

                        //壓縮為75L

                        EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 75L);

                        myEncoderParameters.Param[0] = myEncoderParameter;

                        result.Save(strSaveAs, jgpEncoder, myEncoderParameters);

                    }

                    System.IO. File.Delete(tempFilePath);

參考:

[保哥]

http://blog.miniasp.com/post/2009/05/A-generic-error-occurred-in-GDI-plus.aspx

[GitHub]高手的解答(我也以此解決問題)

http://stackoverflow.com/questions/15571022/how-to-find-reason-for-generic-gdi-error-when-saving-an-image