A Generic error occurred in GDI in Bitmap Save method

Question

I am working on to upload and save a thumbnail copy of that image in a thumbnail folder   I am using following link   http   weblogs asp net markmcdonnell archive 2008 03 09 resize-image-before-uploading-to-server aspx  but    newBMP Save directory    tn     filename        is causing exception  A generic error occurred in GDI     I have tried to give permission on folder  also tried to use a new separate bmp object when saving   Edit        protected void ResizeAndSave PropBannerImage objPropBannerImage                   Create a bitmap of the content of the fileUpload control in memory         Bitmap originalBMP   new Bitmap fuImage FileContent               Calculate the new image dimensions         int origWidth   originalBMP Width          int origHeight   originalBMP Height          int sngRatio   origWidth   origHeight          int thumbWidth   100          int thumbHeight   thumbWidth   sngRatio           int bannerWidth   100          int bannerHeight   bannerWidth   sngRatio              Create a new bitmap which will hold the previous resized bitmap         Bitmap thumbBMP   new Bitmap originalBMP  thumbWidth  thumbHeight           Bitmap bannerBMP   new Bitmap originalBMP  bannerWidth  bannerHeight               Create a graphic based on the new bitmap         Graphics oGraphics   Graphics FromImage thumbBMP              Set the properties for the new graphic file         oGraphics SmoothingMode   SmoothingMode AntiAlias  oGraphics InterpolationMode   InterpolationMode HighQualityBicubic              Draw the new graphic based on the resized bitmap         oGraphics DrawImage originalBMP  0  0  thumbWidth  thumbHeight            Bitmap newBitmap   new Bitmap thumbBMP           thumbBMP Dispose            thumbBMP   null              Save the new graphic file to the server         newBitmap Save    image thumbs      t    objPropBannerImage ImageId  ImageFormat Jpeg            oGraphics   Graphics FromImage bannerBMP              Set the properties for the new graphic file         oGraphics SmoothingMode   SmoothingMode AntiAlias  oGraphics InterpolationMode   InterpolationMode HighQualityBicubic              Draw the new graphic based on the resized bitmap         oGraphics DrawImage originalBMP  0  0  bannerWidth  bannerHeight              Save the new graphic file to the server         bannerBMP Save    image     objPropBannerImage ImageId     jpg                 Once finished with the bitmap objects  we deallocate them          originalBMP Dispose             bannerBMP Dispose            oGraphics Dispose

User · Answer

I encountered this error while trying to convert Tiff images to Jpeg  For me the issue stemmed from the tiff dimensions being too large  Anything up to around 62000 pixels was fine  anything above this size produced the error

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I used below logic while saving a  png format  This is to ensure the file is already existing or not   if exist then saving it by adding 1 in the filename  Bitmap btImage   new Bitmap  D   Oldfoldername  filename png        string path  D   Newfoldername  filename png               int Count 0                  if  System IO File Exists path                                         do                                               path    D   Newfoldername  filename         Count     png                                             while  System IO File Exists path                                       btImage Save path  System Drawing Imaging ImageFormat Png

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I got it working using FileStream  get help from these http   alperguc blogspot in 2008 11 c-generic-error-occurred-in-gdi html http   csharpdotnetfreak blogspot com 2010 02 resize-image-upload-ms-sql-database html  System Drawing Image imageToBeResized   System Drawing Image FromStream fuImage PostedFile InputStream           int imageHeight   imageToBeResized Height          int imageWidth   imageToBeResized Width          int maxHeight   240          int maxWidth   320          imageHeight    imageHeight   maxWidth    imageWidth          imageWidth   maxWidth           if  imageHeight  gt  maxHeight                        imageWidth    imageWidth   maxHeight    imageHeight              imageHeight   maxHeight                     Bitmap bitmap   new Bitmap imageToBeResized  imageWidth  imageHeight           System IO MemoryStream stream   new MemoryStream            bitmap Save stream  System Drawing Imaging ImageFormat Jpeg           stream Position   0          byte   image   new byte stream Length   1           stream Read image  0  image Length           System IO FileStream fs   new System IO FileStream Server MapPath    image a jpg    System IO FileMode Create   System IO FileAccess ReadWrite               fs Write image  0  image Length

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I was facing the same issue A generic error occurred in GDI  on saving while working on MVC app  I was getting this error because I was writing wrong path to save image  I corrected saving path and it worked fine for me      img1 Save Server MapPath   Upload test png   System Drawing Imaging ImageFormat Png     --Above code need one change  as you need to put close brackets on Server MapPath   method after writing its param    Like this-  img1 Save Server MapPath   Upload test png    System Drawing Imaging ImageFormat Png

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Check your folder s permission where the image is saved  Right cLick on folder then go       Properties   Security   Edit   Add-- select  everyone  and check Allow  Full Control

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Once finished with the bitmap objects  we deallocate them      originalBMP Dispose         bannerBMP Dispose        oGraphics Dispose      This is a programming style that you ll regret sooner or later   Sooner is knocking on the door  you forgot one   You are not disposing newBitmap   Which keeps a lock on the file until the garbage collector runs   If it doesn t run then the second time you try to save to the same file you ll get the klaboom   GDI  exceptions are too miserable to give a good diagnostic so serious head-scratching ensues   Beyond the thousands of googlable posts that mention this mistake   Always favor using the using statement   Which never forgets to dispose an object  even if the code throws an exception     using  var newBitmap   new Bitmap thumbBMP         newBitmap Save    image thumbs      t    objPropBannerImage ImageId  ImageFormat Jpeg       Albeit that it is very unclear why you even create a new bitmap  saving thumbBMP should already be good enough   Anyhoo  give the rest of your disposable objects the same using love

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This error message is displayed if the path you pass to Bitmap Save   is invalid  folder doesn t exist etc

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I had a different issue with the same exception   In short   Make sure that the Bitmap s object Stream is not being disposed before calling  Save    Full story   There was a method that returned a Bitmap object  built from a MemoryStream in the following way   private Bitmap getImage byte   imageBinaryData                         Bitmap image      using  var stream   new MemoryStream imageBinaryData                 image   new Bitmap stream             return image      then someone used the returned image to save it as a file  image Save path     The problem was that the original stream was already disposed when trying to save the image  throwing the GDI  exeption   A fix to this problem was to return the Bitmap without disposing the stream itself but the returned Bitmap object   private Bitmap getImage byte   imageBinaryData                     Bitmap image     var stream   new MemoryStream imageBinaryData      image   new Bitmap stream       return image      then   using  var image   getImage binData        image Save path

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I always check test these    Does the path   filename contain illegal characters for the given filesystem  Does the file already exist   Bad  Does the path already exist   Good  If the path is relative  am I expecting it in the right parent directory  mostly bin Debug  -     Is the path writable for the program and as which user does it run   Services can be tricky here   Does the full path really  really not contain illegal chars   some unicode chars are close to invisible    I never had any problems with Bitmap Save   apart from this list

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I use this solution int G   0   private void toolStripMenuItem17 Click object sender  EventArgs e      Directory CreateDirectory  quot picture quot                                                     G   G   1    FormScreen      memoryImage1 Save  quot picture  picture quot    G ToString      quot  jpg quot      pictureBox1 Image   Image FromFile  quot picture  picture quot    G ToString      quot  jpg quot

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For me it was a permission problem  Somebody removed write permissions on the folder for the user account under which the application was running

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for me it was a path issue when saving the image   int count   Directory EnumerateFiles System Web HttpContext Current Server MapPath    images savedimages         Count     var img   Base64ToImage imgRaw    string path    images savedimages upImages     count   1      png    img Save Path Combine System Web HttpContext Current Server MapPath path      return path    So I fixed it by adding the following forward slash  String path    images savedimages       should be  String path     images savedimages       Hope that helps anyone stuck

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In my case the bitmap image file already existed in the system drive  so my app threw the error  A Generic error occured in GDI      Verify that the destination folder exists Verify that there isn t already a file with the same name in the destination folder

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When either a Bitmap object or an Image object is constructed from a   file  the file remains locked for the lifetime of the object  As a   result  you cannot change an image and save it back to the same file   where it originated    http   support microsoft com  id 814675     A generic error occurred in GDI   JPEG Image to MemoryStream    Image Save     throws a GDI  exception because the memory stream is closed    http   alperguc blogspot in 2008 11 c-generic-error-occurred-in-gdi html    EDIT  just writing from memory          save to an  intermediary  memory stream  that should work   e g  try this one - replace       Bitmap newBitmap   new Bitmap thumbBMP       thumbBMP Dispose        thumbBMP   null      newBitmap Save    image thumbs      t    objPropBannerImage ImageId  ImageFormat Jpeg     with something like     string outputFileName          using  MemoryStream memory   new MemoryStream          using  FileStream fs   new FileStream outputFileName  FileMode Create  FileAccess ReadWrite                 thumbBMP Save memory  ImageFormat Jpeg           byte   bytes   memory ToArray            fs Write bytes  0  bytes Length

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GDI  exceptions occured due to below points   Folder access issue Missing properties of images   If folder issue - please provide access to application If Missing properties then use below code   Code 1  using  Bitmap bmp   new Bitmap webStream          using  Bitmap newImage   new Bitmap bmp                   newImage Save  c  temp test jpg   ImageFormat Jpeg              Code 2  using  Bitmap bmp   new Bitmap webStream           using  Bitmap newImage   new Bitmap bmp                  newImage SetResolution bmp HorizontalResolution  bmp VerticalResolution           Rectangle lockedRect   new Rectangle 0  0  bmp Width  bmp Height           BitmapData bmpData   newImage LockBits lockedRect  ImageLockMode ReadWrite  bmp PixelFormat           bmpData PixelFormat   bmp PixelFormat          newImage UnlockBits bmpData           using  Graphics gr   Graphics FromImage newImage                           gr SmoothingMode   SmoothingMode HighQuality               gr InterpolationMode   InterpolationMode HighQualityBicubic               gr PixelOffsetMode   PixelOffsetMode HighQuality                       foreach  var item in bmp PropertyItems                          newImage SetPropertyItem item                       newImage Save  c  temp test jpg   ImageFormat Jpeg             Different between code 1 and code 2   Code - 1   it will just create image and can open it on normal image viewer   the image can t open in Photoshop Image size will be double    Code - 2   to open image in image edition tools use code   by using code 1 it just create images but it not assign image marks

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Create folder path image thumbs on your hard disk    Problem solved

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from msdn  public void Save  string filename   which is quite surprising to me because we dont just have to pass in the filename  we have to pass the filename along with the path for example  MyDirectory MyImage jpeg  here MyImage jpeg does not actually exist yet  but our file will be saved with this name   Another important point here is that if you are using Save   in a web application then use Server MapPath   along with it which basically just returns the physical path for the virtual path which is passed in  Something like  image Save Server MapPath    images im111 jpeg

[c#] A Generic error occurred in GDI+ in Bitmap.Save method

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