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A Generic Error Occurred In Gdi+ Image.save C#
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A Generic Error Occurred In Gdi In C# Windows Application
programmers, just like you, helping each other. Join them; it only takes a minute: Sign up A generic error occurred in GDI+, JPEG Image to MemoryStream up vote 200 down vote favorite 38 This seems to be a bit of an infamous error all over the web. So much so that I have been unable to
A Generic Error Occurred In Gdi+ Windows 7
find an answer to my problem as my scenario doesn't fit. An exception gets thrown when I save the image to the stream. Weirdly this works perfectly with a png but gives the above error with jpg and gif which is rather confusing. Most similar problem out there relate to saving images to files without permissions. Ironically the solution is to use a memory stream as I am doing.... public static byte[] ConvertImageToByteArray(Image imageToConvert) { using (var ms = new MemoryStream()) { ImageFormat format; switch (imageToConvert.MimeType()) { case "image/png": format = ImageFormat.Png; break; case "image/gif": format = ImageFormat.Gif; break; default: format = ImageFormat.Jpeg; break; } imageToConvert.Save(ms, format); return ms.ToArray(); } } More detail to the exception. The reason this causes so many issues is the lack of explanation :( System.Runtime.InteropServices.ExternalException was unhandled by user code Message="A generic error occurred in GDI+." Source="System.Drawing" ErrorCode=-2147467259 StackTrace: at System.Drawing.Image.Save(Stream stream, ImageCodecInfo encoder, EncoderParameters encoderParams) at System.Drawing.Image.Save(Stream stream, ImageFormat format) at Caldoo.Infrastructure.PhotoEditor.ConvertImageToByteArray(Image imageToConvert) in C:\Users\Ian\SVN\Caldoo\Caldoo.Coordinator\PhotoEditor.cs:line 139 at Caldoo.Web.Controllers.Pictur
have a write permission on some directory. For example, if you are trying to save the Image from the memory stream to the file system , you may get that error. I also faced that error when I was using Infragistics charts control , the system.runtime.interopservices.externalexception (0x80004005): a generic error occurred in gdi+. control was trying to create a temporary chart in ChartImages folder and my application was not
A Generic Error Occured In Gdi+. Bitmap.save C#
given the write permission. Please if you are using XP, make sure to add write permission for the aspnet account on that folder. If you are a generic error occurred in gdi+. asp.net c# using windows server (2003,2008) or Vista, make sure that add write permission for the Network service account. Hope it help some one. 23 Comments Na, _one_ of the possible errors could be the one, you described. The "Generic error" in fact is http://stackoverflow.com/questions/1053052/a-generic-error-occurred-in-gdi-jpeg-image-to-memorystream used in certain scenarios. It means "we were to lazy to write better error return code". This really sucks. Uwe - Saturday, February 28, 2009 8:44:55 PM Well, at least that's based on my experience and on the problems i faced. I know that there is many other causes of that problem,but that's what i know until this time. anas - Saturday, February 28, 2009 8:57:28 PM I think it's the most common error so permissions should always be checked first. SGWellens - Saturday, February http://weblogs.asp.net/anasghanem/solving-quot-a-generic-error-occurred-in-gdi-quot-exception 28, 2009 9:18:12 PM It might not be that you don't have write permissions, but a sharing violation might be in effect. Common scenario that this happens: 1) Read an image into a Bitmap object 2) Manipulate the bitmap 3) Wanting to write back the bitmap to overwrite the original image file you read in step 1. This can happen because the Bitmap implementation seems to be as lazy as possible. It can choose the just remember the path that was the source of the image bits (or even a handle to the opened file they came from). This then means your software has the original image file open, causing this problem when you try to overwrite it in step three. To work around this use some simple code in an intermediate step (let's say 1a) that creates a new, blank Bitmap object with the same width/height/colordepth as the image you read. Then, get a Graphics object for the blank image and draw (BitBlt, basically) the loaded image onto the blank image. Then, dispose the loaded image. This gets you a Bitmap object that contains the content of the loaded image actually stored in memory, without any link to the original image file. Then, work on the Bitmap the way you like and you can easily save it back over the original file in step 3 without sharing violations. (If you have write permissions, of course. ;-)) peSHIr - Sunday, March 1, 2009 10:54:34 AM Hi peSHIr, Thanks for information! I r
GDI+ in .Net (e.g. certainobjects in System.Drawing namespace), we would sometimes get the following exception: System.Runtime.InteropServices.ExternalException: "A generic error occurred in GDI+." Debugging this exception can be extremely frustrating http://www.kerrywong.com/2007/11/15/understanding-a-generic-error-occurred-in-gdi-error/ as it can happen under many different circumstances (here and here), and the error message is too generic to provide any useful information. This exception mostly occurs when trying to write over an http://www.hanselman.com/blog/TheWeeklySourceCode50ALittleOnAGenericErrorOccurredInGDIAndTroubleGeneratingImagesOnWithASPNET.aspx image opened by an Image or Bitmap object. For example, the following code snippet will generate this error: Image img = Image.FromFile(fileName); try { generic error img.Save(fileName); //throws exception! } catch (Exception ex) { Console.WriteLine(ex.Message); } The method listed above tries to open an image file, process the image (code not shown) and then save the image under the same file name. Unfortunately, due to the way GDI+ handles images, the image file was locked a generic error during the whole life time of the img object. And thus an exception was thrown from the underlying Windows API. Based on Microsoft's Knowledgebase article's recommendations, we can prevent this exceptions in two ways (see the article for details): 1. Create a non-indexed image: public void Method1() { Image img = Image.FromFile(fileName); Bitmap bmp = img as Bitmap; Graphics g = Graphics.FromImage(bmp); Bitmap bmpNew = new Bitmap(bmp); g.DrawImage(bmpNew, new Point(0, 0)); g.Dispose(); bmp.Dispose(); img.Dispose(); //code to manipulate bmpNew goes here. bmpNew.Save(fileName); } 2. Create an indexed image: public void Method2() { Image img = Image.FromFile(fileName); Bitmap bmp = img as Bitmap; BitmapData bmpData = bmp.LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadWrite, bmp.PixelFormat); int byteCount = bmpData.Stride * bmpData.Height; byte[] bytes = new byte[byteCount]; Marshal.Copy(bmpData.Scan0, bytes,0, byteCount); bmp.UnlockBits(bmpData); Bitmap bmpNew = new Bitmap(bmp.Wid
ASP.NET|Source Code Sponsored By I got a nice little Yellow Screen of Death (YSOD) error on some code running under IIS that worked fine when running on the VS Developer Web Server. The error was "A generic error occurred in GDI+" and you know that if an error is generic, it's sure in the heck not specific. My little application takes an overhead map that's stored in a local file, does some calculations from user input and draws an X on the map, then returns the resulting dynamically generated image. There's basically three ways to do images on the server side. Use Native APIs and Interop, which only works in full trust, use System.Drawing, which "isn't supported" or use WPF on the server side, which also, ahem, isn't officially supported. I'm still trying to figure out why, but just to be clear, I used System.Drawing in extremely high traffic sites with no problems. As long as paid close attention to my unmanaged resources, I have never had a problem. I've heard anecdotally of people having trouble with GDI+ (System.Drawing) and switching over to WPF and having no problem with that. As with all things, test what you're doing. There's even some ASP.NET Controls on CodePlex that might help. Now this post can't answer ALL reasons you're getting "a generic error occurred in GDI+" but it can answer mine. In my particular case (and I think this is the most common mistake) I was saving the composited image as a PNG. First, I'll show you a little chunk of a code from 5 years ago that took two images and built a single image from them. public class SomeCheckImageHandler : IHttpHandler{ //some stuff snipped public SomeCheckImageHandler(){} public void ProcessRequest(HttpContext context) { context.Response.ContentType = "image/jpg"; //some stuff snipped GetCheckImageRequest req = new GetCheckImageRequest(); //some stuff snipped, get the params from the QueryString GetCheckImageResponse res = banking.GetCheckImage(req); //some stuff snipp